derring-do /ˌderɪŋˈduː/ noun Learner's definition of DERRING-DO
[noncount] old-fashioned + humorous
: brave acts : behavior that requires courage大胆的行为 ◊ Derring-do suggests the brave acts of characters in movies and stories about adventure.*derring-do指冒险片及冒险故事中主人公的英勇行为。