[とつぜん, totsuzen] (adj-na, adj-no, adv) abrupt; sudden; unexpected; all at once; (P) #4312
[そく, soku] (adv) (1) instantly; immediately; at once; (int) (2) that is (to say); namely #7815
[いっせい, issei] (n-adv, n) simultaneous; all at once; (P) #9176
[ただちに, tadachini] (adv) at once; immediately; directly; in person; automatically; (P) #9320
[いっきに, ikkini] (adv) (1) in one go; in one gulp; in one breath; without stopping; without pausing; without resting; in one sitting; at a stretch; all at once; (2) immediately; instantly; right away; straight away; straightaway; (P) #9798
[さっそく, sassoku] (adv) at once; immediately; without delay; promptly; (P) #11350
[kirikiri] (adv) (on-mim) at once; right away; quickly
[sugusoko] (adv, adj-no) (1) close by; right there; short distance away; a hop, skip and jump away; (2) at once; as soon as possible; immediately
[dosadosa] (adv, adv-to, vs) (1) (on-mim) (See ドサ) throwing down multiple objects in succession; (2) at once in great numbers
[deisukuattowansu] (n) { comp } disk at once
[torakkuattowansu] (n) { comp } track at once
[いっせいに, isseini] (adv) simultaneously; all at once; (P)
[いちどに, ichidoni] (adv) all at once; (P)
[いってきせんきん, ittekisenkin] (exp) being lavish with one's money; spending a huge sum of money at once on a treat
[たちまち, tachimachi] (adv) (uk) at once; in a moment; suddenly; all at once; (P)
[いますぐ, imasugu] (adv) at once; immediately; right now; (P)
[いまのうち, imanouchi] (exp) without delay; at once
[ときをうつさず, tokiwoutsusazu] (exp, adv) at once; immediately
[みみそろえて, mimisoroete] (exp) (col) all at once (usu. of payment); at one go
[とりあえず, toriaezu] (adv, n) (uk) at once; first of all; for the time being; for now; (P)
[そっこく, sokkoku] (n-adv) immediately; at once; instantly; (P)
[たばになってかかる, tabaninattekakaru] (exp, v5r) to attack all in a bunch; to attack all at once
[すぐ, sugu] (adj-na, adv, n) (1) (uk) immediately; at once; directly; (2) soon; before long; shortly; (3) easily; without difficulty; (4) right (near); nearby; just (handy); (P)
[とみに, tomini] (adv) suddenly; all at once; rapidly
[にまいかんさつ, nimaikansatsu] (n) holding two positions at once (esp. of sumo rikishi or judges who are also coaches)
[ほんぜんりょうり, honzenryouri] (n) extremely high-grade Japanese meal served all at once (on a table with legs)
[たちどころに, tachidokoroni] (adv) (uk) at once; there and then
[りょうてにはな, ryoutenihana] (n) two blessings at once; flanked by two beautiful women
[とっさに, tossani] (adv) (uk) at once; right away; promptly; on the spur of the moment; (P)