chortles
chor-tles
verb
Emits a joyful, suppressed laugh or chuckle, often with amusement.
"The old man chortles at the children's antics."
noun
Short, gleeful, and somewhat suppressed laughs or chuckles.
"His quiet chortles were heard from the next room."
Thesaurus
Synonyms: chuckle, chortle, laugh softly