Definitions: (1) resistance to fatigue, illness, stress, or difficulty; (2) possessing staying power or endurance

Derivation: Latin, referring to the life-threads spun by the Fates

Quote: Grit, in a word, is stamina. But it’s not just stamina in your effort. It’s also stamina in your direction, stamina in your interests. If you are working on different things but all of them very hard, you’re not really going to get anywhere. You’ll never become an expert. — Angela Lee Duckworth (1970-) American psychologist