uncertain
/ˌʌnˈsɜːtən/adjective
1- not able to be relied on; not known or definite不可靠的; 未知的; 不确定的：
an uncertain future.
前途未卜。
1.1
- (of a person) not completely confident or sure of something（人）不自信的; 无把握的：
I was uncertain how to proceed.
我没把握下一步该怎么做。
短语
in no uncertain terms
- clearly and forcefully毫不含糊地：
she has already refused me, in no uncertain terms.
她已经毫不含糊地拒绝了我。
派生词