intransitive. To smile; in later use, to smile in an affected, self-satisfied, or silly manner; to simper.

Of persons: To give to the features or face a look expressive of pleasure or amusement, or of amused disdain, scorn, etc.

intransitive. To smile. Cf. subrident, adj.

transitive. to break a jest: to utter, crack a joke. So to break a sigh, to break a smile, etc.

Of a person: to smile radiantly, broadly, or good-naturedly. Frequently const. adv.

intransitive. Originally Rugby School. To smile.