一心不乱[isshinfuran] wholeheartedly
淫乱[inran] debauched
潰乱[kairan] corruption (of order, customs, etc.)
快刀乱麻[kaitouranma] solving a problem swiftly and skillfully
怪力乱神[kairyokuranshin] supernatural things

外乱[gairan] noise (interference)
狂乱[kyouran] fury
胡乱[uron] suspicious looking
混乱[konran] disorder
咲乱れる[sakimidareru] to bloom in profusion

遺作[isaku] posthumous works
一毛作[ichimousaku] (a) single crop
稲作[inasaku] rice cultivation
永小作[eikosaku] perpetual land lease
永子作権[eikosakuken] perpetual land lease

英作文[eisakubun] English composition
遠隔操作[enkakusousa] remote control
佳作[kasaku] good piece of work
家作[kasaku] making house
寡作[kasaku] low production