be on mettle

be on your mettle

(slightly formal)

to be determined to prove that you are good at something, especially in a difficult situation It's a tough interview - you'll have to be on your mettle.

Common Names:

Name	Pronounced	Usage
LÝDie	-	Czech
Astrid	AH-strid (Swedish), AH-stree (Norwegian), AHS-trit (German)	Swedish, Norwegian, Danish, German, French
Armand	['a:mɔnd]
Karen	['kɑ:rən]
Battista	baht-TEE-stah	Italian
Aphrodite	a-frə-DIE-tee (English)	Greek Mythology