Mettle
noun /ˈmɛtəl/ — A person's ability to cope with difficulty — their spirit and quality of character.
Definition
The inherent quality of a person's character and spirit — particularly their capacity to endure difficulties and persevere under pressure. Mettle is revealed, not performed.
Beyond the definition
You discover someone's mettle — and your own — only when the situation demands more than ordinary. This is why the phrase is 'test of mettle': it is stress that reveals the material beneath the surface.
Origin & history
A variant spelling of 'metal' — the quality of a blade depending on the quality of the metal it's made from. By the 16th century, the metaphorical use (quality of character) had diverged from the physical into its own spelling.
Example sentences
Illustrative sentences for learning, not verified community posts or sourced quotations.
The crisis tested the team's mettle and found most of them equal to it.
She'd been waiting for an opportunity to show her mettle — and here it finally was.
Mettle is not bravado — it's what's left when bravado has been stripped away.
Synonyms
Antonyms
weakness, spinelessness
Related words
Word in the Wild
See how this word appears in life, language and stories.
Illustrative sentences and imagined stories for learning — not verified sightings, interviews, or sourced quotations.
Fictional scene
Sole figure on mountain ridge

An adult walks with a steady, intentional pace along a high, narrow mountain ridge, carrying a wooden staff.
The act of walking the high ridge alone reveals the figure’s character, as mettle is proven rather than stated. The steady, unwavering pace shows the person's inherent capacity to endure the challenge of the landscape through their own internal strength.
Image credit: Wordspun · AI-generated conceptual illustration