Definition for Simultaneously:

• at the same instant; " they spoke simultaneously"

Synonyms for Simultaneously:

• adv.

  •at the same time (adverb)
  • synchronously,
  • as one,
  • in concert,
  • concurrently,
  • together.
  •simultaneously (adverb)
  • contemporaneously,
  • Concomitantly,
  • concurrently,
  • coincidentally,
  • synchronously.

• adv

  •concurrently (adverb)
  • all at once.
  •simultaneously (adverb)
  • contemporaneously,
  • Concomitantly,
  • concurrently,
  • coincidentally,
  • synchronously.
  •together (adverb)
  • contemporaneously,
  • with one voice,
  • in sync,
  • on the beat,
  • as one,
  • all together,
  • concurrently.

• n.

  •
  • together,
  • as one.
  •
  • all together,
  • all at once,
  • time.
  •simultaneously (noun)
  • at the same time.

• Other synonyms:

  •
  • together.
  •conjointly
  • jointly.
  •Other relevant words:
  • in concert,
  • contemporarily,
  • in the interim,
  • bluntly,
  • now,
  • erstwhile,
  • Pari Passu,
  • at the same time,
  • as well as,
  • directly,
  • formerly,
  • all together,
  • this minute,
  • meantime,
  • forthwith,
  • on that occasion,
  • coevally,
  • simultaneous,
  • at that time,
  • once,
  • straightaway,
  • instantly,
  • together,
  • in phase,
  • on the beat,
  • with one voice,
  • straightway,
  • immediately,
  • in unison,
  • Parallelly,
  • pronto,
  • in sync,
  • coincidently,
  • meanwhile,
  • frankly,
  • then,
  • at a time,
  • alternately,
  • abreast,
  • along,
  • right now,
  • as one,
  • right away,
  • in a hurry,
  • at one stroke,
  • crossly,
  • at one time,
  • in real time,
  • headlong,
  • without delay,
  • all at once,
  • per saltum,
  • straight off,
  • at once,
  • synchronically,
  • doubly,
  • instantaneously,
  • time,
  • at a stroke,
  • right off,
  • contemporaneous,
  • in accord,
  • in chorus,
  • jointly,
  • concurrent,
  • Subito.

Antonyms for Simultaneously:

• adv.

  • Other antonyms:
    separately, consecutively, apart, individually, independently, successively.