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Definitions

fortitude

[fawr-ti-tood, -tyood] / ˈfɔr tɪˌtud, -ˌtyud /
NOUN
strength of mind; guts
Synonyms
STRONGEST
boldness bravery courage determination endurance fearlessness firmness grit mettle moxie nerve patience perseverance pluck spunk stamina staying power tenacity valor
STRONG
backbone braveness constancy courageousness dauntlessness gutsiness hardihood heart intrepidity pith resoluteness resolution spine spirit starch stomach stoutheartedness valiancy valorousness
WEAK
stick-to-itiveness true grit what it takes
Antonyms
STRONGEST
apathy cowardice fear irresolution laziness lethargy timidity weakness
WEAK
helplessness

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.

Loyalties and fortitude are repeatedly tested in this immersive drama.

From The Wall Street Journal • Feb. 27, 2026

Mental fortitude has been a problem for Scotland, but not for Glasgow.

From BBC • Feb. 5, 2026

She’s like, “Oh, I have the mental fortitude to withstand this temporary blow.”

From Los Angeles Times • Jan. 28, 2026

To be fair, 2025 produced plenty of IPO doozies that investors would be wise to avoid until they demonstrate real technical fortitude.

From Barron's • Jan. 23, 2026

Here is a task for all that a man has of fortitude and delicacy.’”

From "Book Scavenger" by Jennifer Chambliss Bertman

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.