snicker
intransitive verbTo utter a partly stifled laugh.
nounA partly stifled laugh.
nounA halfsuppressed laugh; a giggle. Also
To laugh in a half-suppressed or foolish manner; giggle.
To say in a giggling manner.
Also
A half suppressed, broken laugh.
intransitive verbTo laugh slyly; to laugh in one’s sleeve.
intransitive verbTo laugh with audible catches of voice, as when persons attempt to suppress loud laughter.
nounA