unsure 

  1. 形容詞
不確定的, 不肯定的
無把握的, 不確知的
不穩定的, 不可靠的
unsure of/about ...(事):
對...不確定的
對...無把握的
unsure of ...(主詞自己):
缺乏信心的
對自己沒信心的
優柔寡斷的

    同義字詞
distrustful,doubtful,dubious,mistrustful,skeptical,suspicious,uncertain,unconvinced,undecided,unsettled

例句

  1. I am unsure what to do next.
  2. He paused, unsure how much to say.
  3. Anne bit her lip and looked unsure .
  4. I don't think HB is unsure of himself.
  5. She felt intimidated, unsure of herself.