- diffident (about something)
not having much confidence in yourself; not wanting to talk about yourself 缺乏自信的；胆怯的；羞怯的 a diffident manner/smile 畏首畏尾的态度；羞怯的一笑 He was modest and diffident about his own success. 他很谦虚，不愿谈及自己的成功。 🔊🔊 She felt diffident about speaking in public. 她对在公共场合讲话感到异。 Greg was the quiet, diffident type. 格雷格是那种文静、羞怯型的人。
Word Originlate Middle English (in the sense ‘lacking confidence or trust in someone or something’): from Latin diffident- ‘failing in trust’, from the verb diffidere, from dis- (expressing reversal) + fidere ‘to trust’.