tentative

Not fully worked out, concluded, or agreed on; provisional.

Indicating a lack of confidence or certainty; hesitant.

Based on or consisting in trial or experiment; experimental; empirical.

An essay; a trial; an experiment.

Of or pertaining to a trial or trials; essaying; experimental.

An essay; a trial; an experiment.

A trial; an experiment.

Of or pertaining to a trial or trials; essaying; experimental.

Uncertain; subject to future change.

under terms not final or fully worked out or agreed upon