noncommittal

Tending to avoid commitment; lacking certainty or decisiveness; reluctant to give out information or show one's feelings or opinion.

The Major's face was noncommittal.

The noncommittal Indians would give no counsel as to fording.

Failure to commit to a decision or course of action.

As a result of cowardly noncommittals during the immediate postelection period, there was so much strain on several black-white Democratic relationships that they approached open ruptures.

A voter etc. who has not yet committed to a decision.

Where they occur, in the Liberal increases in Quebec and Ontario for instance, they are offset by declines in the number of undecideds or noncommittals.