derring-do
/ˈderɪŋˈduː/noun
mass noun
- dated or humorous action displaying heroic courage〈旧或幽默〉英勇事迹：
tales of derring-do.
关于英勇事迹的故事。
词源
late 16th cent.: from late Middle English dorryng do 'daring to do'， used by Chaucer， and， in a passage by Lydgate based on Chaucer's work， misprinted in 16th-cent. editions as derrynge do; this was misinterpreted by Spenser to mean 'manhood， chivalry'， and subsequently taken up and popularized by Sir Walter Scott.