cackle

1 an explosive sound that is a sign of amusement erupted in a high-pitched cackle at the absurdity of the suggestion Synonyms belly laugh, boff (or boffo), boffola, cachinnation, laugh, chortle, chuckle, giggle, guffaw, hee-haw, horselaugh, laughter, snicker, snigger, titter, twitterRelated Words crow, whoop; grin, simper, smile, smirkNear Antonyms cry, groan, moan, sob, wail; face, frown, grimace, lower (also lour), mouth, pout, scowl

2 friendly, informal conversation or an instance of this the constant cackle of his seat companion made the long flight seem even longer Synonyms backchat, chat, causerie, chatter, chin music, chin-wag [slang], chitchat, confab, confabulation, gab, gabfest, gossip, jangle, jaw, natter [chiefly British], palaver, patter, rap, schmooze, small talk, table talk, talk, tête-à-têteRelated Words colloquy, conference, discourse, parley, powwow, symposium; debate, dialogue (also dialog), exchange, give-and-take; crosstalk, happy talk; yak (also yack), yammer, yap