1. 形容詞
   缺乏自信的
   羞怯的, 懦怯的
   客客氣氣的
   (人)diffident about ...(事):
   對...缺乏信心的
   怯於...的
   (人)diffident about ...(動詞ing ...):
   對做...缺乏信心的
   怯於做...的
   

   同義字詞
   backward,bashful,coy,demure,introverted,modest,recessive,retiring,self-effacing,sheepish,shy,withdrawn
   

例句

1. Reserved; a touch diffident .
2. He seemed diffident , even shy.
3. No longer was he a diffident youth.
4. The Minister is being unusually diffident .
5. I was still rather gun-shy and diffident about churches.
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