relentless

adjective

re·​lent·​less ri-ˈlent-ləs 

: showing or promising no abatement of severity, intensity, strength, or pace : unrelenting

relentless pressure

a relentless campaign

relentlessly adverb

relentlessness noun

Synonyms

• determined
• dogged
• grim
• implacable
• unappeasable
• unflinching
• unrelenting
• unyielding

Examples of relentless in a Sentence

Her relentless optimism held the team together.

The hunter was relentless in pursuit of his prey.

a relentless opponent of deregulation

Recent Examples on the Web

Israeli actress Noa Cohen portrays Mary, Israeli actor Ido Tako plays her husband, Joseph, and Oscar-winner Anthony Hopkins appears as Herod the Great, the tyrannical leader on a relentless quest to find and kill the Messiah. —Monica Mercuri, Forbes, 7 Dec. 2024

But beyond the sparkle and the prestige, his work remains an intimate letter to the lavishing beauty of the Italian artisanship and his own relentless pursuit of beauty and innovation in the modern world. —Fairchild Studio, WWD, 7 Dec. 2024

Watching Maria’s vibrant, patient generosity, the relentless charisma of a nonna at the height of her powers, was a balm on my still-grieving heart. —Juliet Grames, People.com, 7 Dec. 2024

His irreverent sense of humor — delivered amid expletives and with a childlike grin that belies his 61 years — seems to have carried him through the relentless five years of work. —Thomas Adamson, Los Angeles Times, 6 Dec. 2024

Word History

First Known Use

1592, in the meaning defined above

Kids Definition

relentless

adjective

re·​lent·​less ri-ˈlent-ləs 

: not lessening in severity, intensity, strength, or pace : unrelenting

relentless criticism

relentlessly adverb

relentlessness noun