ぐっすり Common word JLPT N3 LinksSentence search for ぐっすりSentence search for グッスリEdit in JMdict Adverb (fukushi), Adverb taking the 'to' particle1. soundly (sleeping); fast (asleep)Onomatopoeic or mimetic wordOther formsグッスリ Discussions Log in to talk about this word.