by mistake

prepositional phrase

By accident; without the intention to do so.

“Today I took your packed lunch to work by mistake.”

Similar
in errormistakenly
Opposite
deliberatelyon purposeintentionally
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Meanings

prepositional phrase
  1. idiomaticBy accident; without the intention to do so.

    Today I took your packed lunch to work by mistake.

    Synonyms: in error, mistakenly

Synonyms & antonyms

prepositional phraseBy accident; without the intention to do so.

Similar
in errormistakenly

antonym(s) of “by accident”

Opposite
deliberatelyon purposeintentionally
Cite this entry
APA

by mistake. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/by%20mistake

MLA

“by mistake.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/by%20mistake. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “by mistake,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/by%20mistake.

Source: by mistake on Wiktionary, CC BY-SA 4.0.