1) 無断むだん Parts 無 断 #14,978 Link copied! Common むだん [0] Meaning Shirabe ① Noun Noun (prefix) absence of permission; lack of permission 彼女かのじょはよく無断欠席むだんけっせきをする。 She is often absent without leave. ② Noun Noun (prefix) absence of (advance) notice; lack of notice Kanji 無 ム nothingness, none, ain't 断 ダン severance, decline, refuse Forms 無断#14,978無断むだんむだんむだん