simultaneously

American  

[sahy-muhl-tey-nee-uhs-lee] / ˌsaɪ məlˈteɪ ni əs li /

adverb

1. at the same time.

   By moving the chicken coop every day, we simultaneously provide the birds with fresh food and sanitary living conditions.

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Other Word Forms

• nonsimultaneously
  adverb
• unsimultaneously
  adverb

Etymology

Origin of simultaneously

simultaneous ( def. ) + -ly

Explanation

Use the adverb simultaneously to describe actions that occur at the same time. You are reading this sentence and simultaneously learning a new word! Simultaneously doesn’t have to describe two different actions. It just means that things are happening at the same time. If a presidential debate is broadcast simultaneously on three television channels, “broadcast” is the only action but it’s happening in three places at once.

Example Sentences

“And yes, it is as stressful as it sounds,” Judge said, recalling a client who was simultaneously supporting a 28-year-old and a 78-year-old.

From MarketWatch • May 14, 2026

GPUs are particularly well-suited for AI computing because they can handle myriad tasks simultaneously, rather than completing them sequentially like a traditional CPU.

From Barron's • May 14, 2026

The process combines what used to be separate phases — filming with actors and visual effects — to occur almost simultaneously.

From Los Angeles Times • May 13, 2026

The first laser beam established the position of each cluster with an accuracy of about 10 nm and placed the particles into a quantum superposition, meaning they could follow multiple paths through the apparatus simultaneously.

From Science Daily • May 11, 2026

And as he cut himself adrift, both from them and simultaneously from that other world he had known before them, he marveled: What an awful thing the truth is, and how comforting is a lie.

From "The Best of Enemies" by Osha Gray Davidson

Related Words

• together