simultaneously
Americanadverb
Other Word Forms
Etymology
Origin of simultaneously
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.
Vocabulary lists containing simultaneously
Vocabulary from the Introduction to "Reality is Broken" by Jane McGonigal
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The Devil's Arithmetic
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Drums, Girls, and Dangerous Pie
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
About 29% carried two pathogens simultaneously, while 11% had three infections and 3% carried four different pathogens.
From Science Daily • May 26, 2026
Social Security does not allow someone to simultaneously collect both benefits, but it does allow them to switch from one to the other.
From MarketWatch • May 26, 2026
When a horse trots, is there a moment when its four feet are in the air simultaneously?
From Slate • May 25, 2026
But he was a heroic figure to me as a teenager, very much in the same way that simultaneously, like Bob Dylan and the Rolling Stones were, or John Lennon was, or Allen Ginsberg was.
From Los Angeles Times • May 25, 2026
A cousin brought measles into the house, and all of us except Martha were stricken simultaneously.
From "Cheaper by the Dozen" by Frank B. Gilbreth Jr. and Ernestine Gilbreth Carey
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
