Synonyms of unrelenting

unrelenting

adjective

ˌən-ri-ˈlen-tiŋ 

1

as in adamant

sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion

that professor tends to be unrelenting about deadlines

Synonyms & Similar Words

• adamant
• stubborn
• steadfast
• uncompromising
• implacable
• hardened
• unyielding
• unbending
• intransigent
• obstinate
• dogged
• obsessive
• obdurate
• willful
• mulish
• relentless
• immovable
• bullheaded
• perverse
• hard
• pertinacious
• inflexible
• persistent
• adamantine
• headstrong
• opinionated
• pat
• hardheaded
• ossified
• strict
• hard-nosed
• pigheaded
• determined
• self-willed
• deaf to reason
• inexorable
• inconvincible
• unflinching
• stiff-necked
• iron
• tenacious
• severe
• stern
• self-opinionated
• wayward
• rigid
• defiant
• wrongheaded
• resolved
• hard-line
• single-minded
• cantankerous
• contrary
• uncooperative
• intractable
• firm
• unmanageable
• anal-retentive
• stouthearted
• recalcitrant
• indomitable
• hidebound
• narrow-minded
• mutinous
• contumacious
• hard-shell
• refractory
• unconquerable
• disobedient
• unruly
• insubordinate
• hell-bent
• demanding
• invincible
• insurgent
• bloody-minded
• exacting
• ungovernable
• set
• inveterate
• cussed
• confirmed
• froward
• unregenerate

Antonyms & Near Antonyms

• complying
• flexible
• compliant
• acquiescent
• agreeable
• yielding
• amenable
• pliant
• obedient
• pliable
• docile
• submissive
• responsive
• tractable
• willing
• receptive
• relenting
• accepting
• reasonable
• manageable
• placable
• temperate
• slavish
• subservient
• persuadable
• governable

2

as in relentless

showing no signs of slackening or yielding in one's purpose

unrelenting in the pursuit of equality for all races

Synonyms & Similar Words

• relentless
• grim
• determined
• persistent
• implacable
• unflinching
• unyielding
• ruthless
• dogged
• unappeasable
• stubborn
• willful
• merciless
• hard
• tenacious
• obdurate
• uncooperative
• intractable
• mulish
• peevish
• unforgiving
• perverse
• persevering
• pertinacious
• opinionated
• headstrong
• hardheaded
• pigheaded
• self-willed

Antonyms & Near Antonyms

• softening
• yielding
• weak
• impotent
• slack
• slackening
• spineless
• invertebrate
• pliant
• complaisant
• pliable
• obliging

Example Sentences

Recent Examples of unrelenting

Old enemies, bad habits, a paranoid government and an unrelenting ex-cop will make retirement their most difficult mission yet. — Nellie Andreeva, Deadline, 20 Aug. 2026

Zeizel, who did not treat Clancy prior to the killings, testified that Clancy's intrusive thoughts eventually became unrelenting. — Peter Charalambous, ABC News, 19 Aug. 2026

The unrelenting national attention on the Clancy trial has been difficult for people who've had postpartum psychosis, says Meghan Cliffel who experienced the disorder and is now a mental health advocate. — Deborah Becker, NPR, 16 Aug. 2026

Early in his career, Howell served under a commander whose expectations were unrelenting. — Mark Nevins, Forbes.com, 13 Aug. 2026