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
Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!
The Devil's Arithmetic
Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!
Drums, Girls, and Dangerous Pie
Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!
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.
This strategy makes it possible to analyze tens of thousands of supernovae simultaneously, a task that would be impractical using traditional techniques.
From Science Daily • Jun. 29, 2026
A high-energy laser that cannot precisely track a target moving at speed, or that cannot prioritize among dozens of incoming threats simultaneously, is just an extremely expensive light source.
From MarketWatch • Jun. 29, 2026
Wang's visit comes less than two weeks after EU leaders tasked the European Commission with tackling the issue through talks with Beijing -- while simultaneously preparing beefed-up defence measures to protect key sectors.
From Barron's • Jun. 29, 2026
Bergstrom, 41, spends most nights on a live-shopping app called Whatnot, where hosts like him auction collectibles in real time to an audience that simultaneously banters and bids on his goods.
From The Wall Street Journal • Jun. 27, 2026
A present-day equivalent might be reproduced if the sound-effects man on Gangbusters and Walter Winchell should go on the air simultaneously, before a battery of powerful amplifiers.
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.
