無用

N1 無闇に muyamini unreasonably, absurdly, at random N1 無論 muron of course, naturally N1 用件 youken business N1 用紙 youshi a form N1 用品 youhin articles, supplies, parts N1 用法 youhou directions, rules of use N1 濫用 ranyou abuse, misuse, using to excess N2 応用 ouyou application, put to practical use N2 御無沙汰 gobusata not writing or contacting for a while

N3 無 mu, bu / na.i nothingness, none, ain't N4 用 you / mochi.iru utilize, business, service