クスッと LinksSentence search for クスッとSentence search for くすっとSentence search for くすりとEdit in JMdict Adverb (fukushi)1. slipping out (a chuckle, giggle); unintentionally (letting out a quiet laugh)Onomatopoeic or mimetic wordOther formsくすっと、くすりと Discussions Log in to talk about this word.