So as to exhaust or finish; so as to leave none; to the end; entirely, completely, to a finish; as to clear off, drink off, finish off, pay off, poli…

Expressing decay, elimination, extinction, or termination (in most cases gradual): from its normal state or condition; from existence, to death…

To the conclusion or finish; to an end, to completion, to exhaustion. In general uses, emphasizing the completion of an action.