undeterred

ADJECTIVE

undaunted

Synonyms

STRONGEST

fearless indomitable steadfast

WEAK

audacious coming on strong courageous dauntless fire-eating gallant icy intrepid not discouraged not put off resolute spunky unafraid unalarmed unapprehensive undiscouraged undismayed unfaltering unflinching unshrinking valiant valorous

Antonyms

WEAK

cowardly shrinking

ADJECTIVE

untiring

Synonyms

WEAK

constant continued continuing dedicated devoted dogged eager beaver fireball firm go-go grind hyper incessant indefatigable indomitable inexhaustible jumping patient perky persistent pertinacious plodding plugging resolute staunch steady strong tenacious tireless unceasing unfailing unfaltering unflagging unflinching unremitting unstinted unswerving unwavering unwearied

Antonyms

WEAK

failing irresolute tiring unpersevering

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Nonplussed but undeterred, Cook mailed the documents again.

From Los Angeles Times • Apr. 13, 2026

With that in mind, cryptocurrencies were slightly softer early Tuesday but remain relatively undeterred.

From Barron's • Mar. 3, 2026

Epstein appeared undeterred, eager to give his new friend good news.

From The Wall Street Journal • Feb. 12, 2026

Video of the moment was shared by Honnold and Netflix on Instagram, showing the climber continuing undeterred.

From BBC • Jan. 25, 2026

Wes stood undeterred and again asked her what was wrong.

From "The Other Wes Moore: One Name, Two Fates" by Wes Moore