When it comes to expanding your vocabulary, words that start with u offer a surprising mix of everyday descriptors, uplifting positives, and unique gems you may have never heard before. Are you looking for adjectives that start with u to describe a person? Or looking for positive adjectives to describe your book characters? 

Below, you’ll discover over 300 adjectives starting with u, organized into helpful categories like positive traits, emotions, appearance, and more. 

Positive Adjectives That Start With U

Positive adjectives are a great way to describe people, actions, and ideas in an uplifting and inspiring way. They help highlight strengths, admirable qualities, and encouraging traits. Here are some adjectives starting with u to describe a person positively.

Ultimate

Unbeatable

Unbiased

Unbreakable

Unburdened

Uncommon

Unconditional

Undaunted

Understanding

Undisputed

Unforgettable

United

Unique

United-hearted

Unlimited

Unmatched

Unmistakable

Upbeat

Uplifting

Useful

Negative Adjectives Starting with U

Not every description is flattering. Negative adjectives are just as important because they allow you to describe flaws, weaknesses, or unfavorable traits in people, situations, and things. They bring balance and realism to storytelling, character development, and everyday communication. Below is a list of negative adjectives starting with u. 

Ugly

Unacceptable

Unadaptable

Unappealing

Unattractive

Unbalanced

Unbearable

Unbelievable (negative sense)

Uncaring

Uncertain

Unclear

Uncomfortable

Uncooperative

Uncouth

Undependable

Undesirable

Uneasy

Unfair

Unfaithful

Unfriendly

Neutral / Everyday Descriptive Adjectives Starting with U

Not all adjectives carry a strong positive or negative tone. Many fall in between, serving as simple descriptors for appearance, quantity, or everyday qualities. These neutral adjectives starting with u are versatile and practical in writing and conversation.

Ultimate

Ulterior

Unable

Unadorned

Unaltered

Unarmed

Unchanged

Unclassified

Uncolored

Unconscious

Underground

Understated

Undivided

Undue

Uneven

Uniform

United

Universal

Unknown

Urban

300+ Adjectives Starting with U

Ultimate

Unbeatable

Unbiased

Unbreakable

Unburdened

Uncommon

Unconditional

Undaunted

Understanding

Undisputed

Unforgettable

United

Unique

Unlimited

Unmatched

Unmistakable

Upbeat

Uplifting

Useful

Unflappable

Unifying

Unpretentious

Unshakable

Unstoppable

Unselfish

Untainted

Untroubled

Upstanding

Up-to-date

Upgraded

Unifying-hearted

Unyielding (positive strength)

Unwavering

Unspoiled

Untouchable

Unifying-minded

Unclouded

Unharmed

Unfaltering

Unfailing

Undeniable

Unquestionable

Unflagging

Unfettered

Unflinching

Unhesitating

Unifying-spirited

Undivided (positive sense)

Unscarred

Unspent

Ugly

Unacceptable

Unadaptable

Unappealing

Unattractive

Unbalanced

Unbearable

Unbelievable (negative sense)

Uncaring

Uncertain

Unclear

Uncomfortable

Uncooperative

Uncouth

Undependable

Undesirable

Uneasy

Unfair

Unfaithful

Unfriendly

Ungainly

Unhappy

Unhealthy

Unhelpful

Unimportant

Unimaginative

Uninspired

Unintelligent

Uninviting

Unjust

Unkempt

Unkind

Unknowing

Unknown (negative sense)

Unlawful

Unlicensed

Unlucky

Unmotivated

Unnatural

Unnecessary

Unplanned

Unpredictable

Unprepared

Unproductive

Unqualified

Unreasonable

Unreliable

Unstable

Unsuitable

Unsure

Unwanted

Unwelcome

Unwise

Unworthy

Ultimate

Ulterior

Unable

Unadorned

Unaltered

Unarmed

Unchanged

Unclassified

Uncolored

Unconscious

Underground

Understated

Undivided

Undue

Uneven

Uniform

United

Universal

Unknown

Urban

Usable

Usual

Utility-based

Utilitarian

Untested

Unwritten

Unstated

Unlisted

Unshaped

Unisex

Upstream

Upscale

Uptown

Upper

Updated

Upward

Urgent

Ushered

Utilized

Utensil-like

Understanding

Unassuming

Unbiased

Unblemished

Unbossy

Unbothered

Uncomplicated

Uncomplaining

Uncritical

Undaunted

Unfaltering

Unflappable

Unforgiving

Ungrateful

Unimpressed

Unimpressionable

Uninvolved

Unique-minded

United-hearted

Unjealous

Unjudgmental

Unkind-hearted

Unlikable

Unlovable

Unmoved

Unnerving

Unobtrusive

Unpersuasive

Unpretentious

Unruly

Unselfish

Unsophisticated

Unsupportive

Unsurprised

Untiring

Untrustworthy

Unusual

Unyielding

Upbeat-minded

Upstanding

Upright

Urban-minded

Useful-minded

Understanding-hearted

Ulcerous

Ultimate-sized

Ultraclean

Ultracompact

Ultrafast

Ultrathin

Ultrawide

Umbellate

Umbilical

Umbrella-shaped

Unable-looking

Unadorned-looking

Unaged

Unaffected

Unalloyed

Unanchored

Unarmored

Unavoidable

Unbaked

Unbanded

Unbarred

Unbending

Unblinking

Unbolted

Unbounded

Unbranched

Unbridled

Unbroken

Unbrushed

Unbuckled

Unbuilt

Unbuttoned

Uncalcified

Uncapped

Uncarved

Unceasing

Unclad

Unclassified-looking

Uncluttered

Uncoated

Uncolored-looking

Uncombed

Uncomposed

Uncompressed

Unconcealed

Unconfirmed

Unconnected

Unconventional

Uncorrected

Uncreased

Uncut

Undecided-looking

Undeclared

Undefined

Undelivered

Undemanding-looking

Underdeveloped

Underdone

Underhand

Underlined

Underlit

Underlying

Undernourished

Underprepared

Undersized

Underspoken

Understated-looking

Undistinguished

Undoable

Undone

Undrained

Undressed

Unearned

Unequal

Unequipped

Unerringly

Uneven-textured

Unexcused

Unexpected

Unexplored

Unextended

Unfamiliar

Unfashionable

Unfastened

Unfenced

Unfinished

Unfolded

Unformed

Unglazed

Ungrounded

Unharmed-looking

Unhealed

Unheated

Unhewn

Unhung

Unified

Unifying-looking

Universal-looking

Unlabeled

Unlimited-looking

Unlined

Unlit

Unlocked

Unmelted

Unmoving

Unopened

Unpainted

Unpeeled

Unplanted

Unpolished

Unpressed

Unprinted

Unprocessed

Unqualified-looking

Unreal

Unrealistic

Unrefined

Unregulated

Unrelated

Unrelenting

Unreserved

Unrestrained

Unripe

Unrolled

Unrooted

Unruly-looking

Unsaid

Unsalted

Unsanctioned

Unscathed

Unscented

Unscripted

Unsealed

Unseasoned

Unseen

Unsewn

Unshaded

Unshaped-looking

Unsharpened

Unshaven

Unsheltered

Unshifting

Unshod

Unshorn

Unshrinkable

Unshuttered

Unskilled

Unsmiling

Unsmoothed

Unsocial

Unsold

Unsolicited

Unsolved

Unsorted

Unspoken

Unspotted

Unstained

Unstated-looking

Unstinting

Unstressed

Unstretched

Unstructured

Unstudied

Unsubdued

Unsubstantial

Unsung

Untamed

Untangled

Untapped

Untarnished

Untasted

Untaught

Untaxed

Untempered

Untested-looking

Untidy

Untied

Untimely

Untiring-looking

Untold

Untouched

Untrained

Untrimmed

Untrue

Unturned

Unusable

Unused

Unusual-looking

Unvaried

Unventilated

Unverified

Unversed

Unvocal

Unwary

Unwashed

Unwavering-looking

Unwearied

Unweary

Unweaving

Unwed

Unwell

Unwholesome

Unwieldy

Unwilling

Unwinking

Unwise-looking

Unworthy-looking

Unyielding-looking

Upgraded-looking

Upheaval

Uphill

Upmost

Uppermost

Upright-looking

Upscale-looking

Upstanding-looking

Upstream-looking

Urban-looking

Urgent-looking