Perhaps unsurprisingly, his mettle in polar extremes far outstrips his writing ability.
Slate: Obama Proves His mettle The real show was behind the scenes.
WINNER: Harvey Weinstein Long the king of awards-circuit manipulation, Weinstein has proved his mettle once again this year.
But will it keep women of talent and substance and mettle and ambition from gunning it forward?
Barack Obama and Joe Biden may now have to prove their mettle as never before.
Texas cattle put the horse and his rider more on their mettle than these grade cattle.
They'll be on their mettle, the both of 'em, more 'specially Diablo.
Those curious words of the mysterious girl had placed me upon my mettle.
The assistant was on his mettle, and either failed or triumphed.
They asked questions which went to the heart of the business and put me to my mettle to answer them.
1580s, variant spelling of metal, both forms used interchangeably (by Shakespeare and others) in the literal sense and in the figurative one of "stuff of which a person is made" (1550s) until the spellings and senses diverged early 18c.