tentative
1. [ adjective ] under terms not final or fully worked out or agreed upon
Synonyms: provisional provisionary probationary
Examples:

"probationary employees" "a provisional government" "just a tentative schedule"

Related terms: conditional
2. [ adjective ] unsettled in mind or opinion
Synonyms: doubtful
Examples:

"drew a few tentative conclusions"

Related terms: unsettled
Similar spelling:   tentatively