Synonym Chooser

How does the adjective simultaneous differ from other similar words?

Some common synonyms of simultaneous are coeval, coincident, contemporaneous, contemporary, and synchronous. While all these words mean "existing or occurring at the same time," simultaneous implies correspondence in a moment of time.

the two shots were simultaneous

When can coeval be used instead of simultaneous?

Although the words coeval and simultaneous have much in common, coeval refers usually to periods, ages, eras, eons.

two stars thought to be coeval

In what contexts can coincident take the place of simultaneous?

In some situations, the words coincident and simultaneous are roughly equivalent. However, coincident is applied to events and may be used in order to avoid implication of causal relationship.

the end of World War II was coincident with a great vintage year

When is it sensible to use contemporaneous instead of simultaneous?

The words contemporaneous and simultaneous are synonyms, but do differ in nuance. Specifically, contemporaneous is more often applied to events than to people.

contemporaneous accounts of the kidnapping

Where would contemporary be a reasonable alternative to simultaneous?

The meanings of contemporary and simultaneous largely overlap; however, contemporary is likely to apply to people and what relates to them.

Abraham Lincoln was contemporary with Charles Darwin

When might synchronous be a better fit than simultaneous?

The synonyms synchronous and simultaneous are sometimes interchangeable, but synchronous implies exact correspondence in time and especially in periodic intervals.

synchronous timepieces

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of simultaneous Bots navigate based on simultaneous localization and mapping. Steve Banker, Forbes, 12 Mar. 2025 Multiple hardware tiers On the console side, Microsoft's split simultaneous release of the Xbox Series S and X showed an understanding that not everyone wants to pay more money for the most powerful possible gaming hardware. Ars Technica, 11 Mar. 2025 In July 2021, the Oscar nominee filed a lawsuit against distributor The Walt Disney Company, alleging that its simultaneous release of Black Widow in theaters and on streaming service Disney+ breached a stipulation in her contract that it be released exclusively in theaters. Jack Smart, People.com, 11 Mar. 2025 For their simultaneous environmentallyfriendly and enduring qualities, natural or recycled surfaces are trending in 2025 kitchen designs. Elizabeth Fazzare, Architectural Digest, 6 Mar. 2025 See All Example Sentences for simultaneous
Recent Examples of Synonyms for simultaneous
Adjective
  • Alexa Bliss Saraya and Alexa Bliss, despite their concurrent presence on WWE's main roster, never having a sustained rivalry.
    Paul Du Quenoy, MSNBC Newsweek, 27 Mar. 2025
  • Oh, and Playboi Carti notched the biggest Billboard 200 debut of his career, as well as 30 concurrent Hot 100 entries, thanks to his culture-dominating Music LP.
    Christopher Claxton, Billboard, 25 Mar. 2025
Adjective
  • Usually, migrations do not need synchronous processing and can be handled asynchronously without any manual effort.
    Ravi Laudya, Forbes, 20 Feb. 2025
  • This simple practice shifts whole cycles of collaboration ahead of meetings, dramatically reducing the time needed for synchronous discussion and increasing the quality of decisions.
    Keith Ferrazzi, Forbes, 12 Mar. 2025
Adjective
  • With a lockable synchronic-tilt mechanism and special Z-Shape design, the Kaiser 2 can accommodate a weight up to 180kg, quite a bit more than normal mechanisms on office chairs and the back can be reclined to an angle of 160 degrees which can be locked when not in rocking mode.
    Mark Sparrow, Forbes, 11 Oct. 2021
  • For his last runway collection, unveiled in September, Michele constructed a parallel universe of side-by-side shows separated by a wall that when lifted revealed twins in identical looks in synchronic stride.
    Colleen Barry, Fortune, 24 Nov. 2022
Adjective
  • The timing of these changes were roughly coincident with clarification of Information Blocking rules and Epic’s introduction of its own competing product.
    Seth Joseph, Forbes, 26 Feb. 2024
  • Another suggestion is that there were two more or less coincident eruptions, one each in northern and southern hemispheres.
    Erik Klemetti, Discover Magazine, 26 July 2011

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Cite this Entry

“Simultaneous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/simultaneous. Accessed 3 Apr. 2025.

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