とつぜん 突然 Common word JLPT N3 Wanikani level 26 Play audio LinksSentence search for 突然Sentence search for とつぜんKanji details for 突 and 然Edit in JMdict Noun which may take the genitive case particle 'no', Na-adjective (keiyodoshi), Adverb (fukushi)1. abrupt; sudden; unexpected Discussions Log in to talk about this word.