こうよう 公用 Common word JLPT N1 Wanikani level 3 Play audio LinksSentence search for 公用Sentence search for こうようKanji details for 公 and 用Edit in JMdict Noun1. official business; government business; public business; company dutiesAntonym: 私用かれ彼はこうよう公用でおおさか大阪にい行った。He went to Osaka on official business.Noun, Noun which may take the genitive case particle 'no'2. public use; government useAntonym: 私用 Discussions Log in to talk about this word.