一つ

N1 一頃 hitokoro once, some time ago N1 一筋 hitosuji a line, earnestly, blindly, straightforwardly N2 一応 ichiou tentatively, for the time being N2 一段と ichidanto by far, greater N2 一流 ichiryuu first class, leading N2 一昨年 issakunen year before last N2 一斉 issei simultaneous, all at once N2 一旦 ittan once, for a moment N2 一定 ittei fixed, settled, regular

N5 一 ichi, itsu / hito-, hito.tsu one, one radical (no.1), un