giggleEnglishOxford American Thesaurusgiggle verb Rory couldn't help but giggle at the ridiculous picture: titter, snigger, snicker, tee-hee, give a half-suppressed laugh, chuckle, chortle; smirk, sneer, simper.noun she suppressed a giggle with difficulty: titter, snigger, snicker, tee-hee, half-suppressed laugh, chuckle, chortle; smirk, sneer, simper.