undying

adjective

un·​dy·​ing ˌən-ˈdī-iŋ 

: not dying : immortal, perpetual

undying gratitude/love

Synonyms of undying

• immortal
• enduring
• ongoing
• eternal
• continuing
• perpetual
• lasting

Examples of undying in a Sentence

He swore his undying devotion to her.

his undying devotion to his terminally ill wife is truly inspiring

Recent Examples on the Web

The undying love for Twilight isn’t such a pain in the neck to Kristen Stewart. — Kathleen Perricone, Entertainment Weekly, 14 Aug. 2026

Loathe don’t have to do this—they’re not 5 Seconds of Summer courting an edgy image by citing Nine Inch Nails as an influence, or Travis Scott and A$AP Rocky name-checking Björk on their undying quests to be validated as experimental artists. — Patrick Lyons, Pitchfork, 16 July 2026

But the Stones’ undying love of blues shines through in 18 songs that revel in the seamy underbelly of America. — René Ostberg, Encyclopedia Britannica, 8 July 2026

The adaptation of Georgy Demidov’s eponymous novel, set in the Soviet Union in 1937 during Stalin’s Great Purge, tells the story of a young local prosecutor and dedicated communist who starts to question his undying faith in the regime. — Georg Szalai, HollywoodReporter, 18 June 2026

Word History

First Known Use

14th century, in the meaning defined above

Rhymes for undying

• buying
• crying
• drying
• dyeing
• dying
• flying
• frying
• lying
• plying
• prying
• shying
• sighing

Kids Definition

undying

adjective

un·​dy·​ing ˌən-ˈdī-iŋ 

: not dying : immortal, perpetual

undying gratitude