Thesaurus.com
Dictionary.com
Definitions

steadfastness

[sted-fast-nuhs, -fuhst-] / ˈstɛdˌfæst nəs, -fəst- /
NOUN
fidelity
Synonyms
STRONGEST
constancy faithfulness
STRONG
accuracy adherence adhesion allegiance attachment closeness correspondence exactitude exactness fealty loyalty naturalism preciseness precision realism scrupulousness
WEAK
verism
Antonyms
STRONGEST
inconstancy
STRONG
disloyalty enmity imprecision inaccuracy inexactness

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.

"I applaud your steadfastness in the face of such pressure," Sir Khan wrote.

From BBC • Mar. 6, 2026

Over the course of 18 months, Mr. Landsbergis’s courage and steadfastness to settle for nothing short of full independence set in motion something neither President George H.W.

From The Wall Street Journal • Feb. 24, 2026

It can encompass steadfastness in the face of adversity, selflessness, self-sacrifice, honesty and integrity in one’s dealings with others.

From Los Angeles Times • Feb. 19, 2026

I just had a little bit more steadfastness than a lot of people when they break young.

From Salon • Dec. 4, 2024

Travis had a steadfastness and purpose in his voice that Dill had never heard before.

From "The Serpent King" by Jeff Zentner