Meaning of “tentative” - Learner’s Dictionary

tentative

adjective uk us /ˈtentətɪv/
NOT CERTAIN

A tentative idea, plan, agreement, etc is not certain:

The two companies have announced a tentative deal.
NOT CONFIDENT

doing something in a way that shows you are not confident:

a child's tentative first steps
tentatively adverb

(Definition of “tentative” from the Cambridge Learner’s Dictionary © Cambridge University Press)