as in incorrectly
in a mistaken or inappropriate way
we mistakenly thought that this was our conference room
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Recent Examples of mistakenly
Police initially had said there were six victims at the school but corrected that to five on Wednesday, saying a woman airlifted to the hospital in critical condition was mistakenly counted as being among the dead.
—
Amanda Lee Myers, USA Today, 12 Feb. 2026
The caption of the original image mistakenly labeled natural hair as hair extensions.
—Aude Konan, Scientific American, 11 Feb. 2026
Authorities mistakenly thought that person had died.
—Jim Morris, Los Angeles Times, 11 Feb. 2026
An autoimmune disease is a chronic condition in which part of your immune system mistakenly attacks part of your own body.
—Ruth Jessen Hickman, Health, 10 Feb. 2026
Another city spokesperson, Jessica King, said city communications officials mistakenly provided outdated information because the staff who were familiar with the current limit were at a court hearing in a lawsuit related to an effort to thwart the ongoing convention center expansion.
—Chaya Tong, Austin American Statesman, 7 Feb. 2026
When The Kid told everyone in their class about menstruation—mistakenly suggesting that periods lasted for a month—Karen called me immediately.
—Jen Wang, Vogue, 6 Feb. 2026
The overpayment was the result of an obvious clerical error; the company sent an invoice for $50,578 and was mistakenly paid more than $5 million.
—Orlando Sentinel Editorial Board, The Orlando Sentinel, 6 Feb. 2026
Nanos also cautioned reporters against mistakenly identifying people as suspects.
—Hilary Lewis, HollywoodReporter, 6 Feb. 2026
Amanda Lee Myers, USA Today, 12 Feb. 2026
The caption of the original image mistakenly labeled natural hair as hair extensions.
—Aude Konan, Scientific American, 11 Feb. 2026
Authorities mistakenly thought that person had died.
—Jim Morris, Los Angeles Times, 11 Feb. 2026
An autoimmune disease is a chronic condition in which part of your immune system mistakenly attacks part of your own body.
—Ruth Jessen Hickman, Health, 10 Feb. 2026
Another city spokesperson, Jessica King, said city communications officials mistakenly provided outdated information because the staff who were familiar with the current limit were at a court hearing in a lawsuit related to an effort to thwart the ongoing convention center expansion.
—Chaya Tong, Austin American Statesman, 7 Feb. 2026
When The Kid told everyone in their class about menstruation—mistakenly suggesting that periods lasted for a month—Karen called me immediately.
—Jen Wang, Vogue, 6 Feb. 2026
The overpayment was the result of an obvious clerical error; the company sent an invoice for $50,578 and was mistakenly paid more than $5 million.
—Orlando Sentinel Editorial Board, The Orlando Sentinel, 6 Feb. 2026
Nanos also cautioned reporters against mistakenly identifying people as suspects.
—Hilary Lewis, HollywoodReporter, 6 Feb. 2026
Recent Examples of Synonyms for mistakenly
Adverb
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Amid communication snafus, some residents were incorrectly told their lights were back on.—
Bracey Harris,
NBC news,
5 Feb. 2026
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Missing a filing deadline, incorrectly valuing an asset or failing to list a creditor could result in your case being dismissed or losing property.—
Angelica Leicht,
CBS News,
4 Feb. 2026
Adverb
-
The White House initially did not dispute that Trump made the post and defended it, before a White House official told USA TODAY that a staffer had erroneously made the post, which was then taken down.—
Terry Collins,
USA Today,
7 Feb. 2026
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After calls for its removal -- including by Republicans -- the White House said a staffer had posted the video erroneously.—
BILL BARROW,
Arkansas Online,
7 Feb. 2026
Cite this Entry
“Mistakenly.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/mistakenly. Accessed 18 Feb. 2026.
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