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 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 Oil and gas markets can be highly volatile and opinions in the sector may change instantaneously and without notice. — Gaurav Sharma, Forbes.com, 8 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 Friendships are formed instantaneously; by day four, these men know each other more deeply than many of their friends and relatives. — Rob Picheta, CNN Money, 21 June 2026 With the entrance of radio and television, information was transmitted instantaneously and universally, yet the public grew passive, absorbing news without necessarily acting on it. — Alex Ross, New Yorker, 15 June 2026 Unlike a rocket, which accelerates to escape velocity over a few minutes, subjecting its crew to strong but survivable g-forces, a projectile fired from a cannon accelerates almost instantaneously. — Neil Oseman, Space.com, 14 June 2026
Recent Examples of Synonyms for instantaneously
  1. immediately
  2. instantly
  3. promptly
  4. now
  5. directly
Adverb
  • Spokespersons for Paxton’s campaign and office and the Texas Tech system did not immediately return requests for comment.
    — Eleanor Dearman, Fort Worth Star-Telegram, 18 July 2026
  • Avdis didn’t immediately respond to a request for comment Thursday.
    — Graham Womack, Sacbee.com, 17 July 2026
Definition of immediately
Adverb
  • Amarildo instantly controls a quick throw-in, skips away from one Czech defender, hoodwinks another with a hip-swerve and, spotting keeper Schrojf off his line, fires the ball in at the near post.
    — Adam Hurrey, New York Times, 17 July 2026
  • Because when everyone can generate content instantly, the real scarcity becomes originality, along with perspective, taste, restraint and conviction.
    — Adam Taylor, Forbes.com, 17 July 2026
Definition of instantly
Adverb
  • Danish referee Kim Milton Nielsen promptly issued a red card in a 2-2 tie that Argentina would win in a penalty shootout.
    — Mark Zeigler, San Diego Union-Tribune, 15 July 2026
  • Investigators promptly identified and arrested 23-year-old Jaxson Clift on murder charges in connection with the killing, according to the statement.
    — Samira Asma-Sadeque, PEOPLE, 15 July 2026
Definition of promptly
Adverb
  • An Argentina semifinal win now gives Messi the chance — in what almost certainly will be his final match on the World Cup stage —- to make his country the first back-to-back champion since Brazil in 1958 and ‘62.
    — Miami Herald, Miami Herald, 16 July 2026
  • As a result of her injury, Anderson underwent an emergency craniotomy and now lives with a titanium plate in her head.
    — Lillie Davidson, Fort Worth Star-Telegram, 16 July 2026
Definition of now
Adverb
  • Sales from the thrift store are donated directly to widows, immigrants and refugees in the Sacramento area and internationally.
    — Emma Hall, Sacbee.com, 17 July 2026
  • The problem with wildfires — unlike hurricanes or earthquakes — is that humans can directly influence them.
    — Laura Paddison, CNN Money, 17 July 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 20 Jul. 2026.

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More from Merriam-Webster on instantaneously

Nglish: Translation of instantaneously for Spanish Speakers

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