How to say don't repeat such a careless mistake. in Japanese
1)
そんなそんな(sonna) (adj-pn) such/like that/that sort of不注意不注意(fuchuui) (adj-na,n) carelessness/inattention/thoughtlessnessなな(na) (prt) connects adj to noun/indicates emotion or emphasis/command/prohibition間違い間違い(machigai) (n) mistake/error/blunder/accident/mishap/trouble/improper conduct/indiscretionをを(wo) (prt) indicates direct object of action/indicates subject of causative expression/indicates an area traversed/indicates time over which action takes place/indicates point of departure or separation of action/indicates object of desire, like, hate,繰り返す繰り返す(kurikaesu) (v5s,vt,vi) to repeat/to do something over againなな(na) (prt) connects adj to noun/indicates emotion or emphasis/command/prohibition。。(。) Japanese period "."
