無理impossible無nothing無視disregard無駄futility無料free有無yes or no無限infinite無地plain無数countless number感無量deep feeling無意味nonsense無口reticence無効invalid無言silence無邪気innocence無線wireless無駄遣いwaste money on無断without permission無知ignorance無茶absurd無茶苦茶confused無念chagrin無能inefficiency無闇にunreasonably無用useless無論of course
数 すう
数学mathematics数number数字numeral回数number of times回数券book of tickets過半数majority偶数even number算数arithmetic小数fraction (part of)整数integer単数singular (number)点数marks複数plural分数fraction (in math)枚数the number of flat things無数countless number奇数odd number少数minority数詞numeral多数決majority rule