U = (letter - ) littera u

udder = ubere

U.F.O = (milit.) o.v.n.i. (objecto volante non identificate)

Uganda = *Uganda

ugliness = feditate

ugly = fede, repulsive

Ukraine = Ukraina

ukulele = *ukulele

ulcer = ulcere

ulcerate = ulcerar

ulcerated = ulcerose

ulterior = ulterior

ultimate = ultimate

ultimatum = ultimatum

ultrasonic = *ultrasonic

ultraviolet = ultraviolette

umbilical = umbilical

umbilical-cord = funiculo

umbrage = (take - ) offender se (de, pro)

umbrella = parapluvia

umpire = arbitro;
    arbitrar

umpteen = multissime, io non sape quante

un- (negative prefix) in-, dis-;
    (w/ adj.) in+... , il+l... , ir+r... , im+p... im+m... ;
    (w/ verbs) dis-

U.N. = (United Nations) O.N.U. (organisation del nationes unite)

unabated = sin diminution

unable = incapace, inhabile

unabridged = (not shortened) non abbreviate;
    (of edition) integral

unacceptable = inacceptabile

unaccompanied = (alone) sol;
    sin accompaniamento

unaccountable = inexplicabile

unaccustomed = (not used to) non accostumate, pauco habituate;
    (unusual) insolite

unacquainted = (be -) non cognoscer

unadulterated = non adulterate, pur

unadvisable = pauco consiliabile

unaffected = (sincere) sin affectation, sincer;
    (without alteration) inalterabile

unaided = sin adjuta

unaltered = non alterate

unambiguous = inambigue

unambitious = sin ambition

unanimous = unanime

unanswered = (not replied to) sin responsa;
    (of argument) irrefutabile;
    (of prayer) non *exaudite

unappreciated = *inappreciate

unapproachable = inaccessibile

unarmed = sin armas

unashamed = sin vergonia

unassuming = modeste, sin pretensiones

unattractive = non attractive

unauthorized = non autorisate, illicite

unavoidable = inevitabile

unaware = ignorante, inconsciente

unawares = inconsciemente, per inadvertentia

unbalanced = disequilibrate, instabile

unbearable = insupportabile, intolerabile

unbecoming = incongrue, indecorose

unbelievable = incredibile

unbend = facer se affabile

unbending = inflexibile

unbiased = impartial

unbidden = non invitate

unbind = disligar

unblemished = immaculate

unborn = non ancora nate, futur

unbreakable = infrangibile

unburden = discargar

unbutton = disbuttonar

uncalled-for = gratuite, non meritate

uncanny = (mysterious) mysteriose, extraordinari;
    (disturbing) inquietante

uncared = ( - for) neglecte

unceasing = incessante

uncertain = incerte, insecur

uncertainty = incertitude

unchallenged = incontestate

unchanged = sin alteration, sempre le mesme

unchecked = (not verified, not under control) non controlate;
    (not bridled) non frenate;
    (free) libere;
    (of figures) non verificate;
    sin freno

uncle = oncle

unclean = immunde, impur

unclear = pauco clar

unclothed = nude, sin vestimentos

uncoil = *disinrolar (se)

uncomfortable = (of chairs) non confortabile;
    (of heat) incommode;
    (of mind) inquiete

uncommon = pauco commun, insolite, rar

uncompromising = intransigente

unconcealed = non celate, aperte, non dissimulate

unconcern = indifferentia

unconcerned = indifferente

unconditional = inconditional

unconditionally = *inconditionalmente

unconfirmed = non confirmate

unconnected = sin connexion, disjuncte

unconscionable = excessive, irrationabile

unconscious = inconsciente

unconsciousness = inconscientia, insensibilitate

uncontrollable = (cannot be verified or controlled) incontrolabile;
    (of child) ingovernabile

unconventional = original, pauco conventional

unconventionally = *pauco conventionalmente

unconvinced = non convincite

unconvincing = pauco convincente

uncooked = crude uncork discorcar

uncouple = disaccopular

uncouth = grossier, rude

uncover = (reveal) discoperir, revelar;
    (remove top) levar le coperculo de

uncritical = disproviste de senso critic, pauco exigente

uncultured = inculte

uncut = non taliate

undamaged = (unharmed) intacte;
    (business) non *avariate

undated = sin data

undaunted = intrepide, non territe

undecided = indecise, non resolvite

undecipherable = indecifrabile, illegibile

undefeated = invicte

undefinable = indefinibile

undelivered = non livrate

undeniable = indenegabile

under = (beneath) sub, infra;
    (according to) secundo

undercarriage = carro de atterrage

undercharge = facer pagar minus que le precio juste

underclothes = subvestimentos

undercoat = prime application

undercover = clandestin

undercut = vender minus car que

underdeveloped = *subdeveloppate

underdog = *oppresso

underdone = (undercooked) pauco cocite;
    (of beef) al sanguine

underestimate = estimation insufficiente;
    subestimar;
    (despise) minuspreciar

underfoot = sub le pedes

undergo = suffrer

undergraduate = studente

underground = subterranee;
    (R.R.) metro

undergrowth = arbustos basse, boscage

underhand = clandestin

underline = sublinear

underling = subordinato

underlying = fundamental, subjacente

undermentioned = mentionate infra

undermine = (sap) minar;
    (weaken) ruinar, injuriar

underneath = infra;
    sub

undernourished = subalimentate

underpants = calceones

underpass = passage inferior

underpay = pagar mal

underpin = appoiar

underprivileged = povre, economicamente debile

underrate = subestimar (le importantia de)

undersell = vender minus car

undershirt = subcamisa

undersigned = subsignate;
    subsignato

underskirt = subgonnella

understaffed = con personal insufficiente

understand = comprender, intender

understanding = (comprehension) intelligentia;
    (agreement) accordo

understate = *minimisar

understatement = declaration insufficiente, attenuation del veritate

understudy = substituto

undertake = interprender

undertaker = director de pompas funebre

undertaking = (firm) interprisa;
    (promise) promissa

undertone = voce basse

undervalue = *subestimar, *subvalutar

underwater = submarin

underwear = subvestimentos

underworld = basse fundos del societate

undescribable = indescriptibile

undeserved = *immeritate

undesirable = indesirabile

undetected = non discoperite

undeterred = non discoragiate, intimidate

undeveloped = non disveloppate

undignified = sin dignitate, indecorose

undiluted = (not thinned down) *indiluite, concentrate;
    pur

undiplomatic = pauco diplomatic

undisciplined = *indisciplinate

undiscriminating = sin discernimento

undisguised = (not changed in appearance) non disguisate;
    (open) non dissimulate, aperte, franc

undismayed = sin pavor, impavide, non discoragiate

undisputed = *incontestate

undistinguishable = non distinguibile

undistinguished = mediocre

undisturbed = non disturbate

undivided = indivise, integre

undo = disfacer;
    (ruin) perder

undoing = perdition, ruina

undoubted = indubitate

undreamt = ( - o)f *inimaginabile

undress = disvestir (se)

undrinkable = non potabile

undue = excessive, illegitime

undulate = undular

undulating = undulate

unearned = (not deserved) immeritate;
    (not worked for) non ganiate per labor

unearned-income = renta(s)

unearth = exhumar

unearthly = supernatural, sinistre

uneasiness = anxietate, inquietate

uneasy = (anxious) anxie, inquiete;
    (of sleep) agitate

uneatable = inedibile

uneducated= ignorante, sin instruction, vulgar

unemotional = (not moved) pauco impressionabile;
    (of account) objective

unemployed = disoccupate, sin empleo;
    (le) disoccupatos

unemployment = disoccupation

unemployment-benefit = subsidio de disoccupation

unending = interminabile

unendingly = interminabilemente

unendurable = insupportabile, intolerabile

unenviable = pauco invidiabile

unequal = inequal

unequally = *inequalmente

unerring = infallibile

U.N.E.S.C.O. = (milit.) U.N.E.S.C.O. (ramo educational del O.N.U.)

uneven = (not smooth, not regular) inequal;
    (odd) impar

unevenly = (unequally) inequalmente

unexceptionable = irreprochabile

unexciting = insipide

unexpected = impreviste, insperate

unfailing = constante, inexhauribile, infallibile

unfair = injuste, disloyal

unfairly = injustemente, disloyalmente

unfaithful = (displaying infidelity infidel;
    (of translation) inexacte

unfaithfulness = (infidelity) infidelitate;
    (of translation) inexactitude

unfamiliar = estranie, incognite

unfashionable = foras de moda, passate de moda

unfasten = disfacer

unfathomed = *insondate, *insoniate, *insondabile, *insoniabile

unfavorable = (-vour-) adverse, disavantagiose, disfavorabile

unfeeling = insensibile

unfeigned = non fingite, sincer

unfinished = (incomplete) incomplete;
    (indust.) semilaborate

unfit = (out of place) improprie, inapte;
    (ill) infirme, incapace

unfold = displicar (se)

unforeseen = impreviste, non previdite

unforgettable = inoblidabile

unforgivable = impardonabile

unfortunate = infortunate, infelice

unfortunately = infortunatemente

unfounded = sin fundamento

unfulfilled = *incomplite, irrealisate

unfurnished = non mobilate, sin mobiles

ungainly = disgratiose

ungetatable = inaccessibile

ungodly = (wicked) impie;
    (of row) infernal

ungrammatical = incorrecte

ungrateful = ingrate

unguarded = (not defended) sin defensa;
    (remark) incaute, inconsiderate

unhappiness = infelicitate

unhappy = infelice

unharmed = illese, indemne, san e salve

unhealthy = insalubre, malsan

unheard = (of) inaudite

unheeded = neglecte, a que on non presta attention

unhesitating = decise, firme

unhindered = sin incombramento, libere

unhurt = unharmed

unices = *unixes, *unices

unidentified = non identificate

unidentified flying object = (U.F.O.) objecto volante non identificate (O.V.N.I.)

uniform = uniforme

unify = unificar

unilateral = unilateral

unilaterally = *unilateralmente

unimaginable = non imaginabile, inconcipibile

unimpaired = intacte, integre, non diminuite

unimportant = insignificante, pauco importante, sin importantia

unimpressed = frigide, non impressionate

uninhabitable = *inhabitabile

uninhabited = deserte, non habitate

uninitiated = non initiate

uninjured = (person) illese, indemne;
    (goods) intacte, sin damno

uninspired = banal, mediocre, sin inspiration

uninstall = *disinstallar

uninstaller = *disinstallator

unintelligent = inintelligente

unintelligible = inintelligibile

unintentional = involuntari

unintentionally = *involuntarimente

uninterested = non interessate, indifferente

uninteresting = pauco interessante

uninterrupted = ininterrupte

uninvited = sin invitation

uninviting = pauco attractive, *inappetibile

union = (link, group) union;
    (trade-union) syndicato, trade-union

union-jack = bandiera britannic

unionist = (politics) unionista;
    (trade-unionist) syndicalista

unique = unic

unison = (in - ) de concerto, al unisono

unit = unitate;
    (mechanics) elemento

unit-trust = societate de investimento

unitarian = unitari;
    unitario

unite = unir (se)

united = unite

United-Kingdom = Regno Unite

united-nations = nationes unite

united-states = *statounitese;
    Statos Unite (de America)

unity = unitate

universal = universal

universal-joint = *juncto / articulation de cardan

universally = *universalmente

universe = universo, cosmo

university = universitari;
    universitate

unix = (operating system) *unix

unjust = injuste

unjustifiable = injustificabile

unkempt= (neglected) inculte;
    (of hair) mal pectinate

unkind = cruel, inamical

unkindly = cruelmente, inamicalmente

unkindliness = cruelitate, manco de amabilitate

unkindness = cruelitate, manco de amabilitate

unknowing = incognoscente

unknowingly = incognoscentemente

unknown = incogite, *incognite

unlabled = sin ettiquetta, non-ettiquettate, (without classification) non-classificate

unlace = *dislaciar, disfacer (le cordones / *lacios)

unlawful = illegal, illicite

unless = a minus que, si non

unlicensed = (without authority) non autorisate;
    (of premises) sin licentia

unlike = differente, dissimile, dispare

unlikely = inverisimile

unlimited = illimitate

unload = discargar

unlock = disserrar

unlooked= for impreviste, insperate

unloose = disligar

unlucky = (unfortunate) infortunate;
    (ill-starred) *nefaste

unmanageable = ingovernabile, intractabile

unmanly = effeminate, pauco viril

unmarried = celibe, non maritate

unmatched = incomparabile

unmeant = facite sin intention, involuntari

unmentionable = immentionabile

unmistakeable = evidente

unmoved = impassibile, insensibile

unnamed = innominate

unnatural = innatural

unnaturally = *innaturalmente

unnecessary = inutile, non necessari, superflue

unneeded = non necessari

unnerve = enervar

unnoticed = inobservate

unobstructed = non obstruite

unobtainable = introvabile, non obtenibile

unobtrusive = discrete, modeste

unofficial = non official

unofficially = *non officialmente

unopened = non aperite, non aperte

unorthodox = pauco orthodoxe

unpack = disimballar, dispacchettar

unpaid = non pagate

unparalleled = incomparabile, sin precedente

unpardonable = impardonabile

unpatriotic = *antipatriotic

unperturbed = imperturbate, impassive

unpleasant = (disagreeable) disagradabile;
    (of work) ingrate

unpleasantness = character disagradabile

unpolished = (not smoothened, not refined) non polite;
    (crude) rude

unpopular = impopular

unprecedented = sin precedente

unprejudiced = disinteressate, impartial

unprepared= non preparate

unproductive = improductive

unprofitable = sin profito

unprotected = sin protection

unprovoked = non provocate

unpublished = inedite, non publicate

unpunished = impunite

unqualified = incompetente;
    (without a certificate) sin diploma;
    (without the right) sin titulo;
    (unlimited) absolute, inconditional

unquestionable = indiscutibile

unravel = *disintricar

unreadable = illegibile

unreal = irreal

unreasonable = irrationabile, disrationabile

unrecognizable = *irrecognoscibile

unrecorded = non registrate

unrelated = non connexe, sin relation

unrelenting = implacabile, inexorabile

unreliable = non digne de fide, pauco fidel

unrelieved = non mitigate, total

unremitting = incessante, infatigabile

unrepentant = impenitente

unreservedly = sin reserva

unrest = (restlessness) inquietude;
    (social) agitation, disordine

unrestrained = disfrenate, immoderate, libere

unrestricted = sin restriction

unripe = crude, immatur, verde

unrivaled = incomparabile, sin par, sin rival

unroll = *disinrolar (se)

unruly = *indisciplinate, turbulente

unsafe = insecur

unsaid = non dicite

unsatisfactory = non satisfactori

unsatisfied = non satisfacte

unsavory = disagradabile

unscathed = indemne

unscientific = non scientific, pauco scientific

unscrew = *disvitar

unscrupulous = sin conscientia, inscrupulose

unseal = dissigillar

unseat = (parlament) privar (un deputato) de su sede

unseemly = improprie, indecente

unseen = invisibile

unserviceable = inservibile, inutile

unsettled = (undecided) indecisive;
    (weather) variabile

unshaken = non succutite

unsheltered = non protegite, sin protection, exponite al ventos

unsightly = repugnante al vista

unsigned = non signate, sin signatura

unskilled = (not expert) inexperte;
    (labour) manual, non-specialisate

unsociable = insociabile

unsold = non vendite

unsolicited = non sollicitate

unsolved = non solvite, non resolvite

unsophisticated = (naive) ingenue, naive;
    (simple) simple

unsound = (argument) erronee, false;
    (mind) infirme;
    (structure) defectuose

unsparing = (generous) generose, prodige;
    (merciless) impietose

unspeakable = inqualificabile, inexprimibile

unspecified= non specificate

unstable = instabile

unsteady = (unbalanced) disequilibrate, instabile;
    (tottering) titubante

unstinted = abundante, illimitate

unsuccessful = (without success) non-succedite;
    (efforts) infructuose, van;
    (candidate) non eligite

unsuitable = improprie, incommode

unsuited = inapte;
    (be - ) to disconvenir a

unsure = insecur

unsurpassed = non superate, sin equal

unsuspecting = non suspiciose, sin suspicion

untangle = *disintricar

untenable = intenibile

unthinkable = inconcipibile

untidy = (person) pauco methodic;
    (room) in disordine

untie = disnodar

until = (as far as) usque;
    (before) ante que;
    usque, usque a

untimely = inopportun, prematur

untiring = infatigabile

unto = a

untold = (riches) incalculabile;
    (story) inedite

untouchable = *intoccabile

untrained = inexperte, non specialisate

untrue = false

unusable = inutilisabile

unused = inexhauste, inutilisate

unusual = insolite, singular

unusually = *singularmente

unutterable = ineffabile, inexprimibile

unveil = disvelar

unwanted = non desirate, superflue

unwarrantable = injustificabile

unwarranted = non autorisate, sin garantia, injustificate

unwary = imprudente

unwelcome = non benvenite

unwell = indisposite, malade

unwieldy = non-maneabile

unwilling = *disinclinate, reluctante, non volente

unwillingly = de mal voluntate, de mal grado

unwillingness = reluctantia

unwind = (unroll) *disinrolar se;
    (relax) relaxar se

unwise = mal avisate

unwitting = inconsciente

unworkable = impracticabile

unworthiness = indignitate

unworthy = indigne

unwrap = disinveloppar, dispacchettar

unwritten = (not written) non scribite;
    (traditional) traditional

up = (above, upwards) in alto;
    (out of bed) foras del lecto;
    (finished) finite;
    (road) in reparation;
    in alto del;
    (go - ) montar, ascender;
    (it's - to you) es a vos;
    (what's - with him?) que cosa le afflige?

up-end = altiar le extremitate de

up-grade = promover a grado superior

up-heaval = (geological) sublevamento;
        commotion (un parola)

up-in = in

up-right = honeste, *probe

up-rightness = honestate, *probitate

up-roar = tumulto

up-roarious = tumultose

up-root = *toller le radice, *evelier

upset = (mad) *inferite;
        inferir, *everter

up-shot = exito, evento

up-side = parte superior

up-side-down = in verso

upsilon = (Greek letter Y) *ypsilon, *ipsilon

up-stage = sufficiente, *presumite;
        in le fundo del scenario;
        attraher omne attention del public super un altere persona

up-stairs = in alto;
        del passo (nivello) superior, in alto del scalas;
        passo (nivello) superior

up-standing = honorabile, robuste

up-start = *altiate;
        altiato, *nove persona

up-state = interior

up-stream = in alto del fluvio

up-stroke = movemento ascendente

up-surge = accesso

up-swept = alte

up-swing = ameliorar;
       (on the - ) ameliorante(mente)

up-take = cannon del camino;
       (quick on the - ) esser rapide a comprender

up-thrust = altiamento

up-to = a, usque a

up-to-date = (current) actual, recente;
        (fashionable) al moda;
        de ultime hora


up-to-here = usque a ci, usque a hic    

up-to-now = usque nunc;
        (hitherto) hic (ci) juncto

up-to-the-minute = de ultime minuta;
       ( - news) novas de ultime hora

up-town = al interior del citate

up-trend = tendentia ascendente

up-turn = *melioration, augmento

up-turned = in alto;
       (with - nose) con naso in alto

up-ward = ( -s) ascendente;
       in alto, *surso

up-wind = contra le vento

up-with = viva!

uraemia = uremia

uraemic = uremic

Ural = Ural;
       ( - Mountains) Montanias Ural

Ural-Altaic = *ural-altaic

uranium = uranio

Uranus = (Planet - ) Planeta Urano

urban = urban

urbanism = urbanismo

urbanist = urbanista

urbanity = urbanitate

urbanization = urbanization

urbanize = urbanisar

urge = incitar, urger

urgency = urgentia, emergentia

urgent = urgente

urn = urna

Uruguay = *Uruguay

us = nos

U.S.A. = (milit.) S.U.A. (Statos Unite de America)

usable = usabile

use = uso, utilisation;
        usar, utilisar

useful = utile

usefulness = uso, utilitate

useless = inutile

user = usuario, *usator

usher = introductor;
        (to - in) introducer

U.S.S.R. = Union de Republicas Socialista Sovietic, U.R.S.S. 

usual = usual

usually = usualmente

usurer = usuario, *fenerator

usurp = assumer, occupar, usurpar

usury = usura, *feneration
        (to practice - ) usurar, *fenerar

utensil = utensilio, vaso

utensils = utensilios, vasos

uterine = uterin

uterus = utero

utility = utilitate

utmost = extremo, ultimo, summo;
        (to do one's - ) facer lo summamente possibile

utter = absolute, complete, tote;
        dicer, pronunciar

utterance = dicto, pronunciation

utterly = absolutemente, completemente

uvula = uvula.