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
If frequency varies suddenly or power is lost, these unidirectional systems provide almost instantaneous, short-term backup power to the equipment inside the data center.
—
IEEE Spectrum, 29 Apr. 2026
Loading media is virtually instantaneous on the Fire TV Stick HD.
—Will Greenwald, PC Magazine, 29 Apr. 2026
During back flushes, the valve is never opened more than halfway; this allows for an instantaneous flow rate of no more than 27 gpm.
—Staff Report, Hartford Courant, 25 Apr. 2026
Because the data is instantaneous, even a single day off can set off 20 phone alerts.
—Aiko Bethea, Big Think, 22 Apr. 2026
See All Example Sentences for instantaneous
IEEE Spectrum, 29 Apr. 2026
Loading media is virtually instantaneous on the Fire TV Stick HD.
—Will Greenwald, PC Magazine, 29 Apr. 2026
During back flushes, the valve is never opened more than halfway; this allows for an instantaneous flow rate of no more than 27 gpm.
—Staff Report, Hartford Courant, 25 Apr. 2026
Because the data is instantaneous, even a single day off can set off 20 phone alerts.
—Aiko Bethea, Big Think, 22 Apr. 2026
See All Example Sentences for instantaneous
Recent Examples of Synonyms for instantaneous
Adjective
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That means addressing immediate needs like shelter, and long-term needs such as affordable housing, mental health and workforce development.—
Desiree Mathurin,
Charlotte Observer,
12 May 2026
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Still, Chad and Lori had an immediate attraction to each other and began having an affair.—
Jessica Sager,
PEOPLE,
12 May 2026
Adjective
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Highlights we're honed in on include the Regata Royale Silk Scarf, a dashing accessory that adds instant Hamptons-chic to your look, and the Women's Twill Sleep Short, a cozy, cool take on a traditional boxer short.—
Kelsey Legg,
ABC News,
11 May 2026
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The film represents an instant breakout for its director-screenwriter, who first received attention with his YouTube comedy sketches created in collaboration with Cooper Tomlinson (one of this film’s supporting players) and his extremely low-budget horror film Milk & Serial.—
Frank Scheck,
HollywoodReporter,
11 May 2026
Cite this Entry
“Instantaneous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/instantaneous. Accessed 16 May. 2026.
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