General:
* Reluctantly
* Uncertainly
* Timidly
* Tentatively
* Dubiously
* With reservations
More specific:
* Cautiously: Implies carefulness and a desire to avoid risk.
* Reluctantly: Emphasizes unwillingness or resistance.
* Uncertainly: Highlights a lack of confidence or clarity.
* Timidly: Suggests fear or shyness.
* Tentatively: Implies a lack of commitment or a willingness to change course.
* Dubiously: Shows doubt or skepticism.
* With reservations: Indicates a lack of full agreement or acceptance.
The best synonym for "hesitantly" will depend on the specific context of your sentence.