uncommitted.adjective
not committed; not pledged to a specific.cause or course of action; if you are uncommitted, you have not yet decided to support a particular idea, belief, group or person or you are unwilling to show your support (the allegiance of uncommitted voters will be crucial (they were still uncommitted to the venture when we reached Kanpur); the uncommitted are people who are uncommitted (most of the people, though.unsane, do not need to be committed to a mental institution); if resources are uncommitted, it has not yet been decided what to use them for (an uncommitted plan for travel, pending acceptance by the others)

until.preposition
up to the time of (we danced until dawn); before a specified time (she can't leave until Friday as the plane was rescheduled)
until.conjunction
up to the time that (we walked until it got dark); before (you cannot leave until your work is finished); to the point or extent that (I talked until I was hoarse; See Usage note at till

uterus.noun,.plural.uteri.or.uteruses
a hollow muscular organ located in the pelvic cavity of a woman and in female mammals in which the fertilized egg implants and develops (the amazing process of forming babies in the womb), also called womb
uterine.adjective
of, relating.to.or.in the region of the uterus (the uterine canal; uterine contractions); having the same mother but different fathers (she is my uterine sister, aka.half-sister)
in utero.adjective
in the uterus
in utero.adverb

unsatisfying.adjective
if you find something unsatisfying, you do not get any satisfaction from it (she says so far the marriage has been unsatisfying; boredom is often caused by people's unsatisfying home lives)
unsatisfied.adjective
an unsatisfied demand or request, etc. is one that has not been dealt with (an unsatisfied demand for graduates); being not pleased because you want something to be better (unsatisfied consumers); dissatisfied
unsatisfactory.adjective
not satisfactory; inadequate
unsatisfactorily.adverb
unsatisfactoriness.noun

unit.noun,.plural.units
an individual, a group, a structure or other entity.regarded as an elementary.structural or functional.constituent of a whole; a
group regarded as a distinct entity within a larger group; a fixed amount of scholastic study used as a basis for calculating academic credits, usually measured in hours of classroom instruction or laboratory work; a section of an academic course.focusing on a selected.theme (a unit on Native Americans; a unit in Computers dealing with web design); in arithmetic, the lowest positive whole number

undergird, undergirds, undergirded.or.undergirt, undergirding.transitive verbs
to support or strengthen from beneath

ungrateful.adjective
not feeling or exhibiting.gratitude, thanks or appreciation
ungratefully.adverb
ungratefulness.noun

unplanned.adjective
not intended; unintentional; having no particular.purpose, organization or structure; random; not thought out or prepared in advance; spontaneous (an unplanned adventure; an unplanned picnic)

unworthy, unworthier, unworthiest.adjectives
insufficient in worth; undeserving (unworthy of our consideration); lacking.value or merit; worthless; not suiting or befitting
unworthily.adverb
unworthiness.noun

unintentional.adjective
not deliberate or intentional; inadvertent (an unintentional pun) unintentionally.adverb
unintended.adjective
not deliberate or intentional; unplanned (an unintended slight.reminded me to be careful with what I'm saying)

unappreciated.adjective
not recognized, as to quality or worth (an unappreciated gesture of good will); no thanks for one's thankworthy efforts; not having your helpful work or your qualities appreciated (she was in a job where one's efforts went unnoticed, unappreciated and unrewarded, thus she was struggling in an undervalued position within an organization governed by selfishness and uncaring); not having risen in price or value (an unappreciated investment)
unappreciative.adjective
not feeling or exhibiting appreciation
unappreciatively.adverb

uninhibited.adjective
open and unrestrained (uninhibited laughter)
uninhibitedly.adverb
uninhibitedness.noun

unthinking.adjective
not taking due.thought; thoughtless or heedless; showing forth a lack of thought; incapable of the power of thought
unthinkingly.adverb
unthinkingness.noun
unthink, unthought, unthinking, unthinks.transitive verbs
to dismiss from one's mental attention; disregard

unquestionable.adjective
beyond.question or doubt; indisputable; authentic
unquestionability.or.unquestionableness.noun
unquestionably.adverb
unquestioning.adjective
not marked by or exhibiting.uncertainty or indecision; if you describe a person or their beliefs as unquestioning, you are emphasizing that they accept something without any doubt or disagreement (those in classes learning about life are often erroneously.propagandized toward an unquestioning faith in evolution)
unquestioningly.adverb

unanticipated.adjective
not anticipated (we experienced some unanticipated problems with our airline luggage that almost made us late for the plane); not having been expected; unexpected (unanticipated guests)
unanticipatedly.adverb

unresponsive.adjective
exhibiting a lack of responsiveness
unresponsively.adverb
unresponsiveness.noun

underbrush.noun
small trees, shrubs or similar plants growing beneath the taller trees in a forest

undergrowth.noun
low-growing plants, saplings and shrubs beneath trees in a forest; a growth of short, fine hairs underlying the longer and thicker outer hairs of an animal's coat; underfur or underwool; the form of being less than fully grown

unheeded.adjective
if you say that something such as a warning or danger goes unheeded, you mean that it has not been taken seriously or dealt with (the advice of others went unheeded); disregarded; ignored; neglected, overlooked, unfollowed, unnoticed, unobserved, untaken

unaltered.adjective
something that remains unaltered has not changed or been changed (the rest of the apartment had fortunately remained unaltered since that time; these were my opinions and they continue unaltered
unalterable.adjective
impossible to alter (the unalterable season of bitter cold in Siberia)
unalterably.adverb
unalterability.or.unalterableness.noun

uncultivated.adjective
not cultivated by using agricultural.methods (uncultivated vegetables that grow in the wild; uncultivated ground); socially unpolished, uncultured or unrefined

unpolished.adjective
not polished; not smooth and shiny (unpolished shoes; unpolished gemstones); crude; rough; not elaborated, perfected or completed: an unpolished performance; not having attained a high degree of skill (an unpolished politician); lacking good manners, culture or refinement; natural and unsophisticated (the service was unpolished but peacefully friendly and pleasant)

uninhabited.adjective
having no residents; not inhabited

unaffected.adjective
not changed, modified or affected; marked by lack of affectation; genuine; sincere; naive
unaffectedly.adverb
unaffectedness.noun
(children unaffected by life's issues adults encounter)

unostentatious.adjective
not ostentatious; unpretentious; plain
unostentatiously.adverb
unostentatiousness.noun

unaccustomed.adjective
not accustomed to; common or usual; not being habituated (is still unaccustomed to a life of stress)
unaccustomedly.adverb
unaccustomedness.noun

unfinished.adjective
not brought to an end; incomplete (unfinished business); not having received special processing, such as dyeing or varnishing (unfinished furniture)

uncontrollable.adjective
impossible to control or govern (an uncontrollable urge for a chocolate bar; uncontrollable wild animals)
uncontrollability.or.uncontrollableness.noun
uncontrollably.adverb
uncontrolled.adjective
not under control, discipline or governance
uncontrolledness.noun

undomesticated.adjective
not domesticated (a few undomesticated horses left on the prairies); unaccustomed to domesticated living (after years of living around couples he remained essentially undomesticated)

unskillful.adjective
unskilled; inexpert; ignorant
unskillfully.adverb
unskillfulness.noun
unskilled.adjective
lacking.skill or technical training (unskilled laborers); requiring no training or skill (unskilled jobs; unskilled labor); exhibiting a lack of skill; inexpert (an unskilled painting)

unbroken.adjective
not tampered with; intact (an unbroken dozen); not violated or breached (unbroken promises); uninterrupted; continuous; (unbroken silence); not tamed or broken to harness (unbroken wild horses); not disordered or disturbed (unbroken family ties)
unbrokenly.adverb
unbrokenness.noun
(right now the horse is in a state of unbrokenness)

untamed.adjective
not tamed.or.domesticated or cultivated; an untamed area or place is in its original or natural.state and has not been changed or affected by people (the wild, untamed undergrowth); untamed land is still in its natural state and has not been developed by people; an untamed animal has not been trained to live or work with people; feral, fierce, not broken in, savage, unbroken, uncontrollable, undomesticated, untameable, wild
untamable.also.untameable.adjective
not capable of being tamed or controlled