* Provisional: This implies something is temporary or subject to change.
* Preliminary: This suggests something is done before a final decision or action.
* Exploratory: This implies something is done to gain information or understanding.
* Experimental: This suggests something is being tested or tried out.
* Uncertain: This emphasizes the lack of certainty or confidence.
The best word to use will depend on the specific context and the nuance you want to convey.