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adjective

relentless

/rɪˈlentləs/  ·  say it: rih·LEN·tlis

never stopping; harsh and persistent

In Sophisticated Everyday

In more detail

continuing without stopping or getting weaker; not showing mercy or compassion

Examples

How to use relentless

Relentless describes something that continues intensely without pause or mercy, often with a negative connotation suggesting exhaustion or harshness. It emphasizes both continuity and the absence of mercy or respite, distinguishing it from merely 'persistent' which can be morally neutral or even positive. The word frequently appears in descriptions of difficult circumstances, criticism, or determined pursuits.

Common phrases

Synonyms

unrelenting · persistent · tireless · incessant · unceasing

Opposites

merciful · compassionate · intermittent

Word family

relentlessly (adverb) · relentlessness (noun)

A common mistake

Learners sometimes use 'relentless' to describe something merely repetitive or frequent, forgetting that it specifically implies both continuity AND intensity or severity—a relentless pace is not just frequent but unslackening and demanding.

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