1752, "moral principles or practice," from French morale "morality, good conduct," from fem. of Old French moral "moral" (see moral (adj.)). Meaning "confidence" (especially in a military context) first recorded 1831, from confusion with French moral (French distinguishes le moral "temperament" and la morale "morality").
例文
1. Do what you can to give her confidence and boost her morale .
あなたができる限り彼女に自信を持たせ、士気を高めることができます。
2.It was amazing what a morale booster her visits proved.
驚くべきことに、彼女の訪問は大いに士気を奮い立たせた。
3.His generous offer was a tremendous tonic for our morale .