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.
See also: mettle, on

Common Names:

NameGenderPronouncedUsage
Fabrizio-Italian
AshleighASH-leeEnglish (Modern)
HineHEE-neMaori
Christina[kris'ti:nə]
Ankur-Indian, Hindi, Marathi
CleoKLEE-oEnglish