Adjectives That Start With U | List & Examples

There are many adjectives (words that describe a noun) that start with U. A lot of these adjectives are formed by using the “un-” prefix, making the opposite of the root word.

A few of the most common adjectives that start with U are:

• Ultimate
• Unique
• United
• Useful
• Ugly
• Unable
• Unacceptable
• Unclean
• Unfair
• Unfit
• Unkind
• Unsafe
• Unstable
• Ultimate
• Undercover
• Uneven
• Unusual
• Upward
• Usual
• Utter

This article has lists of many adjectives that start with a U, divided into positive, negative, and neutral.

The QuillBot AI chat is an easy way to find the adjective you want or to check a word’s meaning.

Positive adjectives that start with U

This is a list of adjectives that start with U with a positive connotation:

• Ultimate: The best; final; most extreme
• Unbeatable: Impossible to defeat; superior
• Unbiased: Fair; impartial; objective
• Unblemished: Flawless; pristine; spotless
• Unbreakable: Very strong; not able to be broken
• Uncommon: Rare; exceptional; unusual
• Unconditional: Without limits; absolute; complete
• Undaunted: Courageous; unafraid; determined
• Undeniable: Impossible to deny; certain; incontestable
• Understanding: Sympathetic; kind; tolerant
• Undisputed: Accepted; without challenge; acknowledged
• Undivided: Whole; complete; full
• Unequaled: Superior; unmatched; unparalleled
• Unfazed: Not perturbed; composed
• Unique: One of a kind; distinctive; special
• United: Joined; in harmony; together
• Unmistakable: Clear; obvious; definite
• Unparalleled: Incomparable; unrivaled; unmatched
• Unpretentious: Modest; natural; simple
• Unselfish: Generous; considerate; altruistic
• Unstoppable: Impossible to prevent; relentless
• Up-and-coming: Promising; rising; budding
• Upbeat: Cheerful; optimistic; lively
• Uplifting: Inspiring; encouraging; positive
• Upright: Honest; moral; vertical
• Useful: Helpful; practical; beneficial

Negative adjectives that start with U

Here’s a list of adjectives that start with U with a negative connotation. When applied to a person, these would almost always be considered insults.

• Ugly: Unpleasant in appearance; offensive
• Ulterior: Hidden; underlying; secret (as in motive)
• Unable: Lacking ability; incapable
• Unacceptable: Not satisfactory; intolerable
• Unaccountable: Inexplicable; irresponsible
• Unappealing: Unattractive; unpleasant
• Unapproachable: Distant; unfriendly; hard to reach
• Unattainable: Impossible to achieve; unreachable
• Unavailable: Not accessible; not obtainable
• Unaware: Not conscious; not informed
• Unbearable: Intolerable; too painful or unpleasant
• Uncertain: Unsure; not definite; doubtful
• Unclear: Not easy to understand; vague
• Unclean: Dirty; not sanitary; soiled
• Uncomfortable: Causing discomfort; uneasy
• Unconcerned: Indifferent; not worried; detached
• Unconvincing: Failing to persuade; weak
• Underpaid: Paid too little; insufficiently compensated
• Underprivileged: Lacking advantages; disadvantaged
• Undesirable: Not wanted; unpleasant; objectionable
• Underserved: Not adequately served; neglected; lacking resources
• Uneasy: Anxious; worried; restless
• Unemployed: Without a job; jobless
• Unfair: Not just; biased; inequitable
• Unfaithful: Disloyal; untrustworthy
• Unfamiliar: Unknown; strange; foreign
• Unfavorable: Not advantageous; adverse
• Unfeeling: Lacking emotion; cold; callous
• Unfit: Not in good physical condition (humans); unsuitable;
• Unforgiving: Harsh; merciless; without pardon
• Unfortunate: Unlucky; regrettable; adverse
• Unfounded: Without basis; baseless; groundless
• Unfriendly: Hostile; unsociable; cold
• Ungainly: Clumsy; awkward; ungraceful
• Unhappy: Sad; dissatisfied; troubled
• Unhealthy: Harmful; not good for health
• Unhelpful: Not providing help; hindering
• Unimaginative: Lacking creativity; dull
• Unimportant: Trivial; insignificant; minor
• Uninformed: Lacking knowledge; unaware
• Unjust: Unfair; wrongful; inequitable
• Unkind: Cruel; inconsiderate; harsh
• Unlawful: Illegal; not permitted
• Unlucky: Unfortunate; ill-fated; unlucky
• Unnecessary: Not needed; redundant
• Unpleasant: Disagreeable; offensive; unwelcome
• Unpopular: Disliked; unfashionable; not admired
• Unpredictable: Changeable; uncertain; erratic
• Unreasonable: Illogical; excessive; unfair
• Unreliable: Not dependable; inconsistent
• Unresolved: Not settled; undecided
• Unruly: Disorderly; difficult to control
• Unsafe: Dangerous; insecure; risky
• Unsatisfactory: Inadequate; disappointing; poor
• Unseen: Not noticed; invisible
• Unsophisticated: Simple; naive; lacking refinement
• Unstable: Insecure; changeable; unreliable
• Unsuitable: Inappropriate; unfit; not right
• Unsure: Uncertain; doubtful; hesitant
• Untrustworthy: Dishonest; unreliable; deceitful
• Unwanted: Not desired; rejected
• Unwieldy: Hard to manage; clumsy; awkward
• Unwise: Foolish; imprudent; rash
• Unworthy: Not deserving; inferior

Neutral adjectives that start with U

The following adjectives that start with a U have neither a positive nor negative connotation.

• Ubiquitous: Found everywhere; omnipresent; widespread
• Ultimate: Final; last; most extreme
• Umbrella: Covering many things; overarching
• Unarmed: Without weapons
• Unaware: Not conscious of; uninformed
• Unchanged: Remaining the same
• Uncivilized: Not advanced; lacking refinement (can be pejorative but often neutral in history/anthropology)
• Uncommonplace: Not ordinary; unusual
• Unconditional: Not limited by conditions (positive in tone, but neutral in logic)
• Uncanny: Strange; mysterious; eerie
• Undercover: Secret; covert; disguised
• Underground: Beneath the surface; hidden
• Understated: Subtle; low-key; restrained
• Underwater: Beneath the water
• Underrated: Not given enough credit; undervalued
• Underway: In progress; ongoing
• Uneven: Not level; irregular
• Unified: Combined; made into a whole
• Universal: Applicable everywhere; worldwide
• Unknown: Not identified; unfamiliar
• Unmarked: Without marks; plain
• Unoccupied: Empty; not in use
• Unqualified: Lacking credentials; not meeting requirements
• Unquestionable: Beyond doubt; certain
• Unstated: Not expressed; implicit
• Untimely: Happening at an inappropriate time
• Untouched: Not affected; pristine
• Unusual: Not common; remarkable
• Up-to-date: Current; modern; recent
• Upward: Moving higher; ascending
• Urban: Relating to a city; city-like
• Urgent: Requiring immediate attention; pressing
• Usual: Ordinary; habitual; typical
• Utmost: Greatest; highest; extreme
• Utter: Complete; absolute; total
• Utopian: Idealistic; relating to a perfect society

Adjectives with other letters

If you’re looking for adjectives that start with another letter, you can visit one of our other articles.

Frequently asked questions about adjectives with U

What are some adjectives starting with U to describe a person?

Some adjectives that start with U to describe a person include:

• Unbiased
• Unfazed
• Unique
• Upright
• Ugly
• Unaware
• Uneasy
• Unemployed
• Unkind
• Unpopular
• Unreasonable
• Unruly
• Unwise
• Undercover
• Underrated
• Unknown

If you’re looking for the right adjective or synonym, you can always ask QuillBot’s AI chat for suggestions or definitions.