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by mistake

Erroneously, as in He took my coat by mistake. [c. 1700]

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The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

Related Words for by mistake

unwittingly, unintentionally, short, haphazardly, aback, accidentally, carelessly, inadvertently, mistakenly, sudden, unconsciously, unexpectedly, unprepared, abruptly, ignorantly, surprisingly, unknowingly, unready