Quiz: Remember the definition of mal de mer?


[mi-stey-kuh n] /mɪˈsteɪ kən/
wrongly conceived, held, or done:
a mistaken antagonism.
erroneous; incorrect; wrong:
a mistaken answer.
having made a mistake; being in error.
1590-1600; past participle of mistake; see -en3
Related forms
mistakenly, adverb
mistakenness, noun
unmistaken, adjective
1. inaccurate, misconceived. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for mistakenly
  • Seeing a fact which you mistakenly consider deserving of contempt, you refuse to take a humane view of a fellow creature.
  • Then suspense builds when the dinosaurs mistakenly wake up, due to the wrong medication that counteracts the deep sleep.
  • Panic attacks may mistakenly warn against suffocation.
  • In this form, the immune system mistakenly attacks its own islets as if they were foreign invaders.
  • Consciousness itself is poorly and often mistakenly defined.
  • But sometimes the system mistakenly attacks the body's own cells.
  • The danger in doing this is that if you mistakenly target machines that are not infected you could paralyze your network.
  • Or suppose he has a physiologic brain disorder which makes him mistakenly think he is squirting a water gun.
  • We have mistakenly proceeded in this direction, poor energetic yield and efficiency.
  • So admit that the regulatory burden is strangling the economy or admit that you mistakenly slipped.
British Dictionary definitions for mistakenly


(usually predicative) wrong in opinion, judgment, etc: she is mistaken
arising from error in judgment, opinion, etc: a mistaken viewpoint
Derived Forms
mistakenly, adverb
mistakenness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for mistakenly



c.1600, "under misapprehension," past participle adjective from mistake (v.). Related: Mistakenly. Mistaken identity attested from 1865.

Online Etymology Dictionary, © 2010 Douglas Harper
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