un-
not, opposite of
Usage
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uncharted
Uncharted refers to something that has not been experienced before; it literally means that something has not been mapped out, and so remains an unknown.
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unfeasible
Something unfeasible cannot be made or achieved.
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unseemly
If you say someone's behavior is unseemly, you disapprove of it because it is not in good taste or not suitable for a particular situation.
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unlettered
If someone is unlettered, they are illiterate, unable to read and write.
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untoward
An untoward situation is something that is unfavorable, unfortunate, inappropriate, or troublesome.
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unfazed
To be unfazed is to not be affected by something that happens to you, even if it is quite embarrassing or bothersome.
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uncouth
To act in an uncouth manner is to be awkward and unmannerly.
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unsavory
If you describe something as unsavory, you mean that it is unpleasant or morally unacceptable.
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unadorned
Something that is unadorned is not made more attractive with ornament or decoration.
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unremitting
A thing or person that is unremitting is persistent and enduring in what is being done.
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unkempt
An unkempt person or thing is untidy and has not been kept neat.
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unassuming
Someone who is unassuming is not boastful or arrogant; rather, they are modest or humble.
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unflagging
If you are unflagging while doing a task, you are untiring when working upon it and do not stop until it is finished.
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unobtrusive
If someone acts in an unobtrusive way, their actions are not easily noticed and do not stand out in any way.
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unrequited
If you feel unrequited love for another, you love that person, but they don't love you in return.
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unconscionable
An action or deed is unconscionable if it is excessively shameful, unfair, or unjust and its effects are more severe than is reasonable or acceptable.
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unprepossessing
Something or someone that is unprepossessing is not impressive or is unattractive.
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unsullied
Something that is unsullied is unstained and clean.
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unbridled
A feeling that is unbridled is enthusiastic and unlimited in its expression.
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unscathed
To come out of something unscathed is to come out of it uninjured.
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unalloyed
Something that is unalloyed is whole or complete; for example, unalloyed pain cannot be relieved.
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ungainly
Someone who is ungainly is clumsy or awkward; something ungainly can be difficult to use, primarily because of its size or weight.
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uncanny
Something uncanny is very strange, unnatural, or highly unusual.
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unflappable
When you are unflappable, you remain calm, cool, and collected in even the most trying of situations.
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unfounded
An unfounded claim is not based upon evidence; instead, it is unproven or groundless.
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unnerve
If something unnerves you, it makes you upset or nervous; it can also make you lose your courage because it frightens you so much.
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unorthodox
An unorthodox opinion is unusual, not customary, and goes against established ways of thinking.
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unparalleled
An unparalleled accomplishment has not been equaled by anyone or cannot be compared to anything that anyone else has ever done.
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unprecedented
Something unprecedented has never occurred; therefore, it is unusual, original, or new.
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unquenchable
An unquenchable desire or thirst cannot be satisfied or gotten rid of.
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unrelenting
If you are unrelenting in your desire to do something, you stop at nothing until you've done it.
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unrestrained
Someone who is unrestrained is free to do as they please; they are not controlled by anyone but themself, which can lead to excessive behavior.
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unsightly
An unsightly person presents an ugly, unattractive, or disagreeable face to the world.
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unsurpassed
If you are unsurpassed in what you do, you are the best—period.
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unwarranted
An unwarranted decision cannot be justified because there is no evidence to back it up; therefore, it is needless and uncalled-for.
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unwieldy
Something that is unwieldy is hard or awkward to handle because of the way that it is shaped.
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unwitting
If you did something in an unwitting fashion, you didn't know that you were doing it; therefore, it was unintentional on your part.
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unprincipled
An unprincipled person is immoral, not ethical, or dishonest; therefore, they often do things that are wrong.
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unstable
Something unstable, such as a building or government, is not strong and has problems; therefore, it can change suddenly for the worse or fail in some way.
Related Word Sums
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