instantaneously

adverb

as in immediately
without delay I had just slammed the car door shut when I instantaneously remembered that I had left the keys inside

Synonyms & Similar Words

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Antonyms & Near Antonyms

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 instantaneously While fans have clamored for tickets, many were disappointed and frustrated with high prices and limited availability that seemed to sell out almost instantaneously. — Los Angeles Times, 21 Aug. 2026 The secret lies in servo motors at the end of each propeller arm, which instantaneously tilt the props fore and aft as needed. — New Atlas, 10 Aug. 2026 As the gas rapidly accumulates within these tiny crevices, the bubbles expand almost instantaneously and push the beverage violently out of the bottle to create a soda fountain, also called a geyser. — Encyclopedia Britannica, 5 Aug. 2026 Building cars is one thing, but building that kind of instantaneously recognizable brand requires a deft hand. — Michael Teo Van Runkle, Forbes.com, 1 Aug. 2026 As fresh visual information reaches the brain, these models are updated almost instantaneously, allowing movements to be adjusted before conscious awareness has caught up. — Michelle Spear, Scientific American, 11 July 2026 The chicken and the egg come into existence instantaneously and simultaneously. — Peter Gosselin, Harpers Magazine, 30 June 2026 Almost instantaneously, Garcia drew his weapon and fired nine shots at Denis’s departing vehicle. — Brittany Wallman, Miami Herald, 24 June 2026 That happened instantaneously in a way no other life experience has affected us before. — Breanne L. Heldman, PEOPLE, 23 June 2026
Recent Examples of Synonyms for instantaneously
  1. immediately
  2. instantly
  3. promptly
  4. now
  5. directly
Adverb
  • But that bipartisan effort was immediately panned by conservative groups, and little else has emerged as a serious solution.
    — Ashley Lopez, NPR, 28 Aug. 2026
  • Though freshman Jackson Cantwell likely could have stepped in immediately at left tackle, the junior Okunlola has the game experience (albeit mostly at guard) that should serve him well in taking on the opponent’s best edge rusher.
    — Barry Jackson, Miami Herald, 28 Aug. 2026
Definition of immediately
Adverb
  • The soundtrack topped Billboard charts that fall; Spirit Halloween instantly sold out of licensed costumes.
    — Sophia Nguyen, The Atlantic, 28 Aug. 2026
  • Parton, who died Tuesday, was instantly memorialized for her country music fame, glitzy glam and humanitarian touch.
    — Rachel Siegel, CNN Money, 27 Aug. 2026
Definition of instantly
Adverb
  • Evacuating promptly in an emergency also reduces the likelihood firefighters will have to put themselves in high-stress situations to rescue you.
    — Julian L. Gallegos, The Conversation, 27 Aug. 2026
  • Nevada promptly sued, arguing the plan is untenable for Las Vegas.
    — Noah Haggerty, Los Angeles Times, 27 Aug. 2026
Definition of promptly
Adverb
  • Her light ripples and will forever ripple, and will shine even brighter now.
    — Chris Gardner, HollywoodReporter, 27 Aug. 2026
  • The scientists now plan to collaborate with cement industry stakeholders to determine if the technology can be scaled for mass production.
    — Georgina Jedikovska, Interesting Engineering, 27 Aug. 2026
Definition of now
Adverb
  • The gracious master of ceremonies gave me the place of honor in the line-up, directly behind him, with Reiffer and the two shikaris bringing up the rear.
    — Leslie E. Tassell, Outdoor Life, 27 Aug. 2026
  • Fuel for a compact subcritical reactor The fuel development project is directly connected to AMPERA’s plans for a subcritical micronuclear reactor platform.
    — Kaif Shaikh, Interesting Engineering, 27 Aug. 2026
Definition of directly

Browse Nearby Words

instantaneous
instantaneously
instanter
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Cite this Entry

“Instantaneously.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/instantaneously. Accessed 29 Aug. 2026.

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