ぐうはつ 偶発 Common word LinksSentence search for 偶発Sentence search for ぐうはつKanji details for 偶 and 発Edit in JMdict Noun, Suru verb, Intransitive verb, Noun which may take the genitive case particle 'no'1. sudden outbreak; accidental; incidental Discussions Log in to talk about this word.