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
Ruthi	-	Old Church Slavic
Eusebius	yoo-SEE-bee-əs (English)	Ancient Greek (Latinized)
HediİYe	-	Turkish
Vendula	-	Czech
Eveleen	EV-ə-leen	English (Rare)
Cleo	KLEE-o	English