unsure
adj. 不确定的；不肯定的；没有自信的
例句
He was unsure of what to do next.
他对下一步该做什么犹豫不定。
《牛津词典》
I was unsure how to reply to this question.
我拿不准该如何回答这个问题。
Fifty-two percent were unsure about the idea.
52%的人对这个想法都没有把握。
《柯林斯英汉双解大词典》
