accidentally

adverb

ac·​ci·​dent·​al·​ly ˌak-sə-ˈdent-lē How to pronounce accidentally (audio) -ˈden-tᵊl-ē How to pronounce accidentally (audio)
: in an accidental or unintended manner : by accident
I accidentally deleted the file.
The lock prevents the gate from opening accidentally.
Six lionfish were accidentally released from a home aquarium in Biscayne Bay, Fla., during Hurricane Andrew in 1992.Alcestis Cooky Oberg
The Olympic test was thrown out after the test lab accidentally destroyed the backup sample … that's required to confirm a positive result.Christie Aschwanden
He bumped into her accidentally on purpose. [=he bumped into her intentionally but he tried to make it appear to be an accident]

Examples of accidentally in a Sentence

Recent Examples on the Web
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.
Real quick How this fan accidentally became a go-to Beyoncé concert livestreamer. Rebecca Morin, USA Today, 22 Apr. 2025 In March, Hegseth shared details about action against Houthi targets in Yemen in a Signal chat with top White House officials that accidentally included a journalist. Tom Bowman, NPR, 21 Apr. 2025 But in the show, Abby accidentally sets loose a horde of infected onto the city, probably for the sake of adding an extra action set piece early in the season. Eliana Dockterman, Time, 21 Apr. 2025 In March, it was revealed that Hegseth accidentally texted secret bombing plans in a Signal chat that included a reporter, raising alarms about his handling of sensitive military information. ArsTechnica, 21 Apr. 2025 See All Example Sentences for accidentally

Word History

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of accidentally was in the 14th century

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Cite this Entry

“Accidentally.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/accidentally. Accessed 30 Apr. 2025.

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