Definify.com

Webster 1913 Edition

Verb.

To remain sitting, or in session, longer than, or beyond the time of; to outstay.

Verb.

To sit beyond the time of any thing.

outsit ‎(third-person singular simple present outsits, present participle outsitting, simple past and past participle outsat)

To remain sitting, or in session, longer than, or beyond the time of; to outstay.