once

1度,1回

once の類語

formerly, in one case, one time, at one time, erstwhile, erst, previous, previously, ever, sometime, recent, former, then, early, past, old, late, before, already, earlier, prehistoric, prior, one by one, ancient, separately, onetime, individually, alone, time, sometimes, finally, together, at all, immediately, particularly, definitely, fore, anyway, directly, for good, per se, apart, on one occasion, one day, at any time, whenever, if ever, now and again, quondam, at times, at once, occasionally, once for all, right away, olden, some time ago, no matter when, instantly, long ago, whilom

once の反意語

latter

例文

• We must look into the matter at once.
  我々はそのことをすぐに調査しなければならない。
• You'd better have your hair cut at once.
  君はすぐ頭を刈ってもらったほうがいい。
• You are to give up smoking at once.
  君はすぐにたばこをやめるべきだ。

once の言い換えを探すには

once（1度）の類語・言い換え（パラフレーズ）を、日本語訳つきで関連度順に並べています。英作文の語彙を増やしたいとき、長文読解で本文と選択肢の言い換えを見抜きたいときに使えます。