私用しよう Common Noun Irregular Noun Transitive English jmdict 1 noun (common) (futsuumeishi) noun or participle which takes the aux. verb surunouns which may take the genitive case particle 'no' transitive verb personal use;private use Antonym: 公用 (こうよう) 上司は会社の電話で私用の電話をかけたといって私をひどく叱った。 My boss called me down for making private calls on the office phone. 2 noun (common) (futsuumeishi) private business;personal business Antonym: 公用 (こうよう)