unaccented.adjective
in linguistics, having no diacritical mark; having weak stress or no stress

unbend, unbent, unbending, unbends.verbs
transitive verb use.to release from mental tension, strain or formality; relax; to release a bow, for example from flexure or tension; to straighten something crooked or bent (unbend a paper clip)
intransitive verb use.to become less tense; relax; to become less strict; to become straight
unbendable.adjective

unadaptable.adjective
not adaptable

unnatural.adjective
in violation of a natural law; inconsistent with an individual pattern or custom; deviating from a behavioral or social.norm (an unnatural attachment); contrived or constrained; artificial (smiled in an unnatural manner); in violation of natural feelings; inhuman
unnaturally.adverb
unnaturalness.noun

unlawful.adjective
not lawful; illegal; contrary to accepted morality; illicit;
unlawfully.adverb
unlawfulness.noun

uncle.noun,.plural.uncles
the brother of one's mother or father; the sex partner or husband of one's aunt
uncleless.adjective

unwilling.adjective
not willing; hesitant or loath (unwilling to face facts); done, given or said reluctantly (unwilling to be bamboozled she stood up for principles on the side of concern for all)
unwillingly.adverb
unwillingness.noun

unafraid.adjective
feeling, exhibiting or expressing no fear

urban.adjective
of,.relating.to.or.located in a city; characteristic of the city or city life

urbane, urbaner, urbanes.adjectives
polite, refined and often elegant in manner; suave
urbanely.adverb

uncaring.adjective
devoid of concern or compassion
uncaringly.adverb
uncaringness.noun

unceremonious.adjective
not ceremonious; informal (made an unceremonious presentation); abrupt (an unceremonious departure; not being a ceremonious lady, she exited the raucous party without telling anyone she was leaving)
unceremoniously.adverb
unceremoniousness.noun

undisturbed.adjective
not.disturbed; calm

unapparent.adjective
not readily.apparent (the many pitfalls of a Mount Everest expedition are at first unapparent; out of sight or knowing

unimportant.adjective
not.important; petty
unimportance.noun

unprovoked.adjective
not provoked or prompted

unless.conjunction
except on the condition that; except under the circumstances that; you use unless to introduce the circumstances in which an event you are mentioning will or will not take place or in which a statement you are making is true or not true (unless it hurts most people will do nothing; unless I finish today I won't be going tomorrow; unless you are trying to lose weight to please yourself, it's going to be tough to keep your motivation level high; we cannot comprehend disease unless we know the individual who has the disease)
unless.preposition
except for; except

unreserved.adjective
not held back for a particular person (an unreserved seat); given without reservation; unqualified: unreservedpraise; exhibiting no reserve (an unreserved grin of approval)
unreservedly.adverb
unreservedness.noun

uppermost.adjective
in the highest position, place or rank (finished uppermost in the standings; the uppermost balcony of the apartment building); the uppermost part of something is the part that is higher than the rest of it (her uppermost concern is her children and so it should be); the uppermost thing is the highest one of a group of things (she lives in a small house on the uppermost part of the valley; the rain spattered on the uppermost leaves); if something is uppermost in a particular.situation, it is the most.important thing in that situation
uppermost.adverb
lift the fish and carefully place it on a large board, flat side uppermost
uppermost.adverb

undertone.noun,.plural.undertones
attitudes causing overtones; (the various floors of the office have subtly altered feelings from each other); if something has undertones of a particular kind, it suggests ideas or attitudes of this kind without expressing them directly (a witty, racy story with surprisingly serious undertones; they noticed a hesitant undertone even being in the office just once); an underlying or implied.tendency or meaning; an undercurrent; a tone of low pitch or volume, especially of spoken sound
Color:.a pale or subdued color; a color applied under or seen through another color

unconformable.adjective
not in conformity; conforming
unconformability.or.unconformableness.noun
unconformably.adverb

undependable.adjective
not easily relied or depended on (an undependable worker; an undependable lamp socket; the quality of the water here is undependable)
undependability.noun

unrivaled.adjective
having no rival or equal; incomparable; unsurpassed

unsurpassed.adjective
if you describe something as unsurpassed, you are emphasizing that it is better or greater than anything else of its kind; so great no equal is known to it; not capable of being improved on at the present time

unhewn.adjective
not given a finished form by or as if by hewing; (unhewn wood; a house of unhewn gray stone roughly cemented together); crude; rough; undressed; unfinished; unpolished; unworked

univalent.adjective
Chemistry:.in chemistry, having valence; having only one valence
Genetics:.of.or.relating.to a chromosome that is not paired or united with its homologous chromosome during synapsis
univalent.noun,.plural.univalents
Genetics:.a univalent chromosome

untempered.adjective
not having been tempered; not brought to a proper.consistency or hardness (untempered mortar; untempered steel); extravagant or extreme (the inhumanity of untempered natures in totalitarian.despots, such as Mussolini and Pol Pot, only to name two)

untrustworthy.adjective
if you say that someone is untrustworthy, you think they are unreliable and cannot be trusted; not worthy of trust or belief (the evolutionary concept as applied to the beginning of life's organisms is wholly undependable)

unreliable.adjective
marked by or exhibiting a lack of reliability
unreliability.or.unreliableness.noun
unreliably.adverb

utensil.noun,.plural.utensils
an instrument, an implement or a container used domestically, such as in a kitchen (kitchenwares); a tool

unbridled.adjective
unrestrained; uncontrolled: unbridled anger; not wearing or being fitted with a bridle (an unbridled pony)
unbridledly.adverb
unbridle, unbridled, unbridling, unbridles.transitive verbs
to free from restriction or restraint; to free from a bridle

unsanctioned.adjective
not sanctioned; without explicit.permission (unsanctioned use of company cars)

unremitting.adjective
never slackening; persistent
unremittingly.adverb
unremittingness.noun

unprofitable.adjective
bringing in no profit or profits (an unprofitable business.venture); serving no useful purpose (an unprofitable argument); worthless
unprofitably.adverb
unprofitability.noun,.plural.unprofitabilities
unprofitableness.noun,.plural.unprofitablenesses