乳臭 にゅうしゅう noun (common) (futsuumeishi) 乳臭にゅうしゅう Noun English JMdict (multilingual) 1 noun (common) (futsuumeishi) boyishness;inexperience 漢字 kanji used 乳 milk, breasts 8画 臭 stinking, ill-smelling 9画