1. not certain or definite; hesitant or uncertain
2. done as a trial or experiment; provisional

Examples

• She gave a tentative smile when meeting her new classmates.
• The committee made a tentative decision to postpone the event.
• His tentative steps on the icy sidewalk showed his caution.
• We have tentative plans to visit the museum this weekend.
• The scientist presented tentative findings from the early research.
• Her tentative knock on the door was barely audible.
• The tentative schedule may change depending on weather conditions.