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

Seymour made no apologies for selling himself as a public servant while simultaneously seeking more power.

From Los Angeles Times • Apr. 29, 2026

But an energy shock is part of the Bank of England's check list of risks which Breeden fears could hit simultaneously.

From BBC • Apr. 28, 2026

Army soldier who was simultaneously chasing success in the business world.

From The Wall Street Journal • Apr. 25, 2026

But if the Fed simultaneously lowers the short-term policy rate, both moves could offset each other.

From Barron's • Apr. 24, 2026

At that point Bobby and Tal spoke simultaneously.

From "Endgame" by Frank Brady

Related Words

• together