mettle(redirected from Mettled)
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prove your mettle(slightly formal) also show your mettle
to show that you are brave and have a strong character As a reporter, she certainly proved her mettle working in the midst of a war zone.
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.
prove/show your mettle(slightly formal)
to prove that you are good at doing something by succeeding in a difficult situation A relative newcomer to the game, he's certainly proved his mettle in the last two games.
on (one's) mettle
Prepared to accept a challenge and do one's best.