as in immediate
done or occurring without any noticeable lapse in time
the thunder following the flash of lightning was nearly instantaneous
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Recent Examples of instantaneous
The doomed vessel imploded near the Titanic wreck in the North Atlantic Ocean in 2023, resulting in the instantaneous death of all five occupants.
—
Michael Dorgan, FOXNews.com, 16 Oct. 2025
With a speedy Intel i3 processor, ChromeOS can shine with effortless multitasking and instantaneous startup.
—PC Magazine, 9 Oct. 2025
The connection was instantaneous, the shelter said.
—Tj MacIas, Miami Herald, 7 Oct. 2025
Latency fell from 50 milliseconds to just 17 milliseconds, nearly instantaneous.
—Aamir Khollam, Interesting Engineering, 26 Sep. 2025
See All Example Sentences for instantaneous
Michael Dorgan, FOXNews.com, 16 Oct. 2025
With a speedy Intel i3 processor, ChromeOS can shine with effortless multitasking and instantaneous startup.
—PC Magazine, 9 Oct. 2025
The connection was instantaneous, the shelter said.
—Tj MacIas, Miami Herald, 7 Oct. 2025
Latency fell from 50 milliseconds to just 17 milliseconds, nearly instantaneous.
—Aamir Khollam, Interesting Engineering, 26 Sep. 2025
See All Example Sentences for instantaneous
Recent Examples of Synonyms for instantaneous
Adjective
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Henry's desire for a male heir -- and a new wife who might provide one -- was the immediate catalyst, but other factors were also at play, involving the English crown's seizure of church assets and the growth of Protestant ideas in England.—
Joshua McElwee,
USA Today,
23 Oct. 2025
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The proposal called for an immediate cease-fire and hostage exchange, Israeli security guarantees, the demilitarization of Gaza, and a new civilian governing authority.—
Eric Cortellessa,
Time,
23 Oct. 2025
Adjective
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Wood obviously smashed it on opening weekend, scoring twice against Brentford, while Joao Pedro blanked, filling me with instant regret.—
Holly Shand,
New York Times,
23 Oct. 2025
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From chocolate brown for a subtle upgrade to neutrals, to burgundy and olive green for an instant pop of color, there’s a shade (or two…or eight) for every mood and itinerary.—
Rosie Marder,
Travel + Leisure,
22 Oct. 2025
Cite this Entry
“Instantaneous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/instantaneous. Accessed 30 Oct. 2025.
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