一いっ斉せいTop 4000MeaningsAdverbNoun1. simultaneous; all at onceKanji used一one斉simultaneouslyPitch accentいっせいUsed in vocabularyいっせいにsimultaneously; all at once; in unisonAdverb一いっ斉せい安やすall-round (market) declineNoun一いっ斉せい検けん挙きょwholesale arrest; round-upNoun一いっ斉せい高だかall-round (market) advanceNoun一いっ斉せい射しゃ撃げきvolley firing; fusillade; broadsideNoun一いっ斉せい送そう信しんsimultaneous transmission; sending to multiple recipients; sending a group messageNoun一いっ斉せい攻こう撃げきgeneral attack; all-out attack; attack on all fronts; onslaught; fusilladeNoun