n. 25B6; noun
a man of mettle : SPIRIT, fortitude, strength of character, moral fibre, steel, determination, resolve, resolution, backbone, grit, courage, courageousness, bravery, valour, fearlessness, daring; informal guts, spunk; Brit. informal bottle.
Frazer was of a very different mettle : CALIBRE, character, disposition, nature, temperament, personality, make-up, stamp.