without delay

折り返し、早速、直ちに、至急

without delay の類語

immediately, at once, right away, in no time, then and there, instantly, now, quickly, directly, right off, all at once, all together, pronto, simultaneously, forthwith, straightaway, with all speed, promptly, soon, straightway, swiftly, on the instant, without further delay, pdq, at one time, right now, pretty damned quick, summarily, speedily, this minute, this very minute, expeditiously, on the spot, apace, at one jump, at a blow, at one blow, once, time, right, straight, at a stroke, at one stroke, in a hurry, subito, decisively, smartly, rapidly, instantaneously, at one swoop, readily, double, demand, hastily, flat, instanter, nail, per saltum

without delay の言い換えを探すには

without delay（折り返し）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。