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Definitions

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

Construction of these properties is so far undeterred by those higher costs because of still unmet demand from hyperscalers.

From The Wall Street Journal • Apr. 10, 2026

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

From Barron's • Mar. 3, 2026

The protections prohibit landlords from raising rents by more than 10%, but many seemed undeterred by the rules.

From Los Angeles Times • Feb. 11, 2026

The other Will Grayson doesn't laugh, but Tiny is undeterred.

From "Will Grayson, Will Grayson" by John Green and David Levithan