His temper, therefore, must be well observed: Chide him for faults, and do it reverently, When you perceive his blood inclined to mirth; But, being moody, give him line and scope, Till that his passions, like a whale on ground, Confound themselves with working.
There are no more uses of "mirth" in the play.
Show samples from other sources
It was an evening of many stories and great mirth.
He felt no mirth or humor and wondered if there’d ever be a time again when he would.