Definitions

simultaneous

[sahy-muhl-tey-nee-uhs, sim-uhl-] / ˌsaɪ məlˈteɪ ni əs, ˌsɪm əl- /

ADJECTIVE

happening at about the same time

Synonyms

STRONGEST

concurrent

WEAK

accompanying agreeing at the same time coetaneous coeval coexistent coexisting coincident coinciding concurring contemporaneous contemporary dead heat in sync synchronal synchronic synchronous with the beat

Antonyms

WEAK

asynchronous different divided following preceding separate

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.

Their simultaneous existence indicates a broader trend toward sheer, glorious stupidity that viewers crave when practically everything is either too polished and boring or wilfully obtuse.

From Salon • Jun. 11, 2026

Tickets must be purchased online for specific time slots, the number of simultaneous visitors is capped at 1,500 and a daily morning “quiet hour” was recently introduced to facilitate prayer and contemplation.

From The Wall Street Journal • Jun. 7, 2026

Meanwhile, Houston transit police will wear a device on their chests that performs simultaneous translations in 50 languages to assist tourists.

From Barron's • May 12, 2026

And simultaneous to Villa's triumph, Crystal Palace followed up a 3-1 victory against Shakhtar Donetsk seven days ago with a 2-1 win against the Ukrainian side at Selhurst Park in the second leg.

From BBC • May 7, 2026

These new layered sound effects, built on plainsong tunes, were edging very close to what today we would call ‘harmony’ - that is, the existence and exploitation of simultaneous clusters of notes.

From "The Story of Music" by Howard Goodall

Vocabulary lists containing simultaneous

Tier 2 Words for the SBAC ELA Items

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"To Kill a Mockingbird" by Harper Lee, Chapters 7–11

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100 SAT words Beginning with "S"

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