sniggeringgerund / present participle Used attributively to describe someone or something characterized by sniggering.
Definitions
Laughing in a half-suppressed, typically scornful or mocking, way; given to sniggering. A group of sniggering teenagers sat at the back of the bus.
sniggergerund / present participle Used attributively to describe someone or something that is currently sniggering or characterized by sniggering.
Definitions
Engaged in sniggering; characterized by suppressed, scornful laughter. The sniggering students quickly looked away when the principal entered.