Mettle

1.

(courage or strength or character spirit, courage, ardor on one's mettle prepared to do one's best) សេចក្ដីក្លៀវក្លាហាន, ចិត្ដមុត, ចិត្ដនិងចិត្ដដាច់មេត្ដា

1.

Substance or quality of temperament; spirit, esp. as regards honor, courage, fortitude, ardor, etc.; disposition; -- usually in a good sense.