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impugn

[im-pyoon]
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verb (used with object)
  1. to challenge as false (another's statements, motives, etc.); cast doubt upon.
  2. Archaic. to assail (a person) by words or arguments; vilify.
  3. Obsolete. to attack (a person) physically.
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Origin of impugn

1325–75; Middle English impugnen < Middle French impugner < Latin impugnāre to attack, equivalent to im- im-1 + pugnāre to fight, derivative of pugnus fist; see pugnacious
Related formsim·pugn·a·ble, adjectiveim·pugn·a·bil·i·ty, nounim·pugn·er, nounim·pugn·ment, nounun·im·pugn·a·ble, adjectiveun·im·pugned, adjective
Can be confusedimpugn impute

Synonyms

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1. attack, asperse, malign, criticize, censure.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for impugning

impugn

verb
  1. (tr) to challenge or attack as false; assail; criticize
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Derived Formsimpugnable, adjectiveimpugnation (ˌɪmpʌɡˈneɪʃən) or impugnment, nounimpugner, noun

Word Origin

C14: from Old French impugner, from Latin impugnāre to fight against, attack, from im- + pugnāre to fight
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

Word Origin and History for impugning

impugn

v.

"attack by argument," late 14c., from Old French impugner, from Latin impugnare "to assault, to attack," from assimilated form of in- "into, in, on, upon" (see in- (2)) + pugnare "to fight" (see pugnacious). Related: Impugned; impugning.

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Online Etymology Dictionary, © 2010 Douglas Harper