snicker
Half-suppressed little laugh
A snicker is a half-suppressed laugh, often expressing mockery or amusement at something inappropriate: She couldn't hold back a snicker when he tripped.
The verb means to laugh this way: The students snickered at the typo on the board.
A snicker suggests less openness than a giggle and more meanness than a chuckle.
giggle
Soft, silly vocalization
guffaw · smirk · stifle · suppress · muffle · derisive · mocking · scornful · contemptuous · ridicule
nicker
Soft horse vocalization
muzzle · nostril · mare · stallion · foal · gelding · paddock · stable · pasture · equine
snickerguffaw
Boisterous burst of mirth
belly laugh · cackle · laugh out loud · hearty laugh · chortle