Meaning: Not reforming or changing one's ways; stubbornly unrepentant.

Part of speech: adjective

Example: He was an unregenerate sinner.

Category: Religion

Synonyms:

• unrepentant
• stubborn

Antonyms:

• reformed
• repentant

Meaning: Not yielding in strength or severity; persistent.

Part of speech: adjective

Example: The unrelenting heat made it hard to work.

Category: Nature › Weather

Synonyms:

• persistent
• unwavering

Antonyms:

• yielding
• relenting

Meaning: Not alleviated or eased; constant.

Part of speech: adjective

Example: He suffered from unrelieved pain.

Category: Medicine › Pain Management

Synonyms:

• constant
• uninterrupted

Antonyms:

• relieved
• alleviated

Meaning: Not noticed or commented upon.

Part of speech: adjective

Example: His efforts went unremarked.

Category: Social Issues

Synonyms:

• ignored
• unnoticed

Antonyms:

• remarked
• noticed

Meaning: Not stopping or slowing down; persistent.

Part of speech: adjective

Example: The unremitting rain caused flooding.

Category: Nature › Weather

Synonyms:

• relentless
• constant

Antonyms:

• intermittent
• occasional

Meaning: Not able to be repeated; unique.

Part of speech: adjective

Example: The experience was unrepeatable.

Category: Arts › Performance

Synonyms:

• singular
• one-of-a-kind

Antonyms:

• repeatable
• common

Meaning: Not feeling or showing regret for one's actions.

Part of speech: adjective

Example: He remained unrepentant after the incident.

Category: Religion

Synonyms:

• unremorseful
• stubborn

Antonyms:

• repentant
• remorseful

Meaning: Without reservation or limitation.

Part of speech: adverb

Example: He unreservedly accepted the offer.

Category: Social Issues

Synonyms:

• completely
• totally

Antonyms:

• partially
• conditionally

Meaning: Not controlled or limited; free.

Part of speech: adjective

Example: His unrestrained enthusiasm was contagious.

Category: Social Issues

Synonyms:

• uncontrolled
• free

Antonyms:

• restrained
• controlled

Meaning: Having no equal; unmatched.

Part of speech: adjective

Example: Her talent is unrivalled in the industry.

Category: Arts › Performance

Synonyms:

• unmatched
• peerless

Antonyms:

• rivaled
• matched

Meaning: Not rounded; having sharp angles or edges.

Part of speech: adjective

Example: The unrounded edges of the table were dangerous.

Category: Design

Synonyms:

• sharp
• angular

Antonyms:

• rounded
• smooth

Meaning: To remove a saddle from a horse.

Part of speech: verb

Example: He will unsaddle the horse after the ride.

Category: Nature › Animals

Synonyms:

• remove saddle
• take off saddle

Meaning: not aware of oneself as an object of observation

Part of speech: adjective

Example: She danced with an unselfconscious joy.

Category: Psychology

Synonyms:

• natural
• uninhibited

Antonyms:

• self-conscious
• awkward

Meaning: not able to be used or repaired

Part of speech: adjective

Example: The equipment was declared unserviceable after the accident.

Category: Technology

Synonyms:

• damaged
• inoperable

Antonyms:

• serviceable
• functional

Meaning: not holding back; severe

Part of speech: adjective

Example: The critic was unsparing in his review of the film.

Category: Arts

Synonyms:

• harsh
• severe

Antonyms:

• lenient
• merciful

Meaning: too awful to be expressed in words

Part of speech: adjective

Example: The tragedy left them with unspeakable grief.

Category: Psychology

Synonyms:

• indescribable
• unimaginable

Antonyms:

• speakable
• expressible

Meaning: giving or spending freely without limits

Part of speech: adjective

Example: She received unstinting support from her friends.

Category: Social

Synonyms:

• generous
• lavish

Antonyms:

• stingy
• meager

Meaning: not supported by evidence

Part of speech: adjective

Example: The claims were deemed unsubstantiated by the committee.

Category: Law

Synonyms:

• unproven
• unsupported

Antonyms:

• substantiated
• proven

Meaning: not spoiled or tarnished

Part of speech: adjective

Example: Her reputation remained unsullied despite the rumors.

Category: Social

Synonyms:

• pure
• untarnished

Antonyms:

• sullied
• tainted

Meaning: not backed by evidence or support

Part of speech: adjective

Example: The theory was unsupported by any research.

Category: Science

Synonyms:

• unproven
• unsubstantiated

Antonyms:

• supported
• proven

Meaning: better than anything else

Part of speech: adjective

Example: Her talent is unsurpassed in the industry.

Category: Arts

Synonyms:

• unmatched
• peerless

Antonyms:

• surpassed
• inferior

Meaning: not changing or wavering

Part of speech: adjective

Example: His unswerving loyalty to his friends is admirable.

Category: Social

Synonyms:

• steadfast
• constant

Antonyms:

• wavering
• fickle

Meaning: not organized or methodical

Part of speech: adjective

Example: His unsystematic approach led to confusion.

Category: Education

Synonyms:

• chaotic
• disorganized

Antonyms:

• systematic
• organized

Meaning: not damaged or spoiled

Part of speech: adjective

Example: The untainted landscape was a sight to behold.

Category: Nature

Synonyms:

• pure
• untouched

Antonyms:

• tainted
• spoiled

Meaning: not able to be maintained or defended

Part of speech: adjective

Example: The argument was deemed untenable by the experts.

Category: Philosophy

Synonyms:

• indefensible
• unsustainable

Antonyms:

• tenable
• defensible

Meaning: Showing persistent effort without tiring.

Part of speech: adjective

Example: Her untiring dedication to the project inspired everyone.

Category: Motivation

Synonyms:

• indefatigable
• unflagging

Antonyms:

• tiring
• wearying

Meaning: To or towards (used in a formal or literary context).

Part of speech: preposition

Example: He gave his heart unto her.

Category: Literature

Synonyms:

• to
• towards

Meaning: Not able to be touched or affected.

Part of speech: adjective

Example: The ancient artifact was considered untouchable.

Category: Culture

Synonyms:

• inviolable
• sacred

Antonyms:

• touchable
• accessible

Meaning: Unexpected and inappropriate or harmful.

Part of speech: adjective

Example: They took precautions to avoid any untoward incidents.

Category: Safety

Synonyms:

• unfortunate
• unfavorable

Antonyms:

• favorable
• advantageous

Meaning: Not restricted or hampered.

Part of speech: adjective

Example: She enjoyed an untrammelled view of the mountains.

Category: Freedom

Synonyms:

• unrestricted
• free

Antonyms:

• restricted
• limited

Meaning: Not turned over or examined.

Part of speech: adjective

Example: There are still many stones left unturned in this investigation.

Category: Investigation

Synonyms:

• unexamined
• overlooked

Antonyms:

• turned
• examined

Meaning: Not having received formal instruction.

Part of speech: adjective

Example: His untutored talent was evident in his artwork.

Category: Education

Synonyms:

• self-taught
• untrained

Antonyms:

• tutored
• trained

Meaning: Too great or extreme to be expressed in words.

Part of speech: adjective

Example: The unutterable joy of the moment was overwhelming.

Category: Emotions

Synonyms:

• indescribable
• inexpressible

Meaning: Not covered with varnish; plain and straightforward.

Part of speech: adjective

Example: He gave an unvarnished account of the events.

Category: Communication

Synonyms:

• plain
• unembellished

Antonyms:

• varnished
• embellished

Meaning: Not expressed in words; silent.

Part of speech: adjective

Example: Her unvoiced concerns lingered in the air.

Category: Communication

Synonyms:

• silent
• unspoken

Antonyms:

• voiced
• expressed

Meaning: Not justified or authorized.

Part of speech: adjective

Example: His unwarranted criticism upset her.

Category: Law

Synonyms:

• unjustified
• unjust

Antonyms:

• justified
• warranted

Meaning: Steady and resolute; not wavering.

Part of speech: adjective

Example: Her unwavering support helped him through tough times.

Category: Motivation

Synonyms:

• steadfast
• unfaltering

Antonyms:

• wavering
• faltering

Meaning: Difficult to carry or manage due to size or weight.

Part of speech: adjective

Example: The unwieldy package was hard to lift.

Category: Logistics

Synonyms:

• cumbersome
• awkward

Antonyms:

• manageable
• easy

Meaning: In a way that is not intentional; unintentionally.

Part of speech: adverb

Example: She unwittingly revealed the secret.

Category: Communication

Synonyms:

• inadvertently
• unintentionally

Antonyms:

• intentionally
• knowingly

Meaning: Not accustomed or usual; unusual.

Part of speech: adjective

Example: His unwonted behavior surprised everyone.

Category: Behavior

Synonyms:

• unusual
• atypical

Antonyms:

• usual
• typical