chortle

Titter is a synonym of chortle.

As nouns the difference between chortle and titter

is that chortle is a joyful, somewhat muffled laugh, rather like a snorting chuckle while titter is a nervous or repressed giggle.

As verbs the difference between chortle and titter

is that chortle is to laugh with a chortle or chortles while titter is to laugh or giggle in a somewhat subdued manner.

Cackle is a synonym of chortle.

In intransitive terms the difference between chortle and cackle

is that chortle is to laugh with a chortle or chortles while cackle is to talk in a silly manner; to prattle.