tentative
/ˈtentətɪv/adjective
1- not certain or fixed; provisional未决的, 未定的; 暂时性的：
a tentative conclusion.
暂时的结论。
1.1
- done without confidence; hesitant试探（性）的; 犹豫的, 迟疑不决的：
he eventually tried a few tentative steps round his hospital room.
他终于绕病房试探性地走了几步。
派生词
tentatively
adverbtentativeness
noun词源
late 16th cent.: from medieval Latin tentativus, from tentare, variant of temptare 'handle, try'.