be in stitches beguile the time break up burst into laughter burst out burst out laughing burst with laughter bust a gut cachinnate cackle chortle chuckle crow drown care giggle go into convulsions guffaw ha-ha have a ball have fun hee-haw hee-hee ho-ho horselaugh kill time laugh laugh outright live it up loosen up nearly die laughing relax roar roar with laughter shake like jelly shake with laughter shout shriek snicker snort split split with laughter tee-hee titter yuk-yuk