v. t. To perform inefficiently, as a play; to act feebly. [ 1913 Webster ]
n. Subordinate action; a minor action incidental or subsidiary to the main story; an episode. [ 1913 Webster ]
The least episodes or underactions . . . are parts necessary or convenient to carry on the main design. Dryden. [ 1913 Webster ]
n. A subordinate actor. [ 1913 Webster ]