[どうじに, doujini] (adv, conj) coincident with; while; simultaneously #1339
[どうじ, douji] (n, adj-no) simultaneous(ly); concurrent; same time; synchronous; together; (P) #2579
[いっせい, issei] (n-adv, n) simultaneous; all at once; (P) #9176
[かさなる, kasanaru] (v5r, vi) (1) to be piled up; to lie on top of one another; (2) to come one after another; to happen over and over; to pile up (e.g. stress); to accumulate; (3) to overlap (each other); to occur at the same time; to happen simultaneously; (P) #15948
[かねる, kaneru] (aux-v) (1) (See 兼ねない) to be unable to (usu. kana); to find difficult (unpleasant, awkward, painful) to do (usu. kana); (v1, vt) (2) to serve two or more functions or roles simultaneously; to contain (or combine) two or more features; (3) to work in two or more jobs simultaneously (positions, etc.); to do alongside; (4) to hesitate to do something (out of consideration for others); (5) to think of the future (as well as the present); (P) #17407
[サイマルほうそう, saimaru housou] (n) simulcast; simultaneous broadcast
[あぶはちとらず, abuhachitorazu] (n) attempting two tasks simultaneously, accomplishing neither
[いちどきに;いちじに;いっときに, ichidokini ; ichijini ; ittokini] (adv) at the same time; at a time; at one time; simultaneously
[いっしんさんがん, isshinsangan] (n) { Buddh } (See 三諦) simultaneous contemplation of the threefold truth (form of Tendai meditation)
[いっせいに, isseini] (adv) simultaneously; all at once; (P)