disconfirm

 [dis-kuhn-furm]  

dis·con·firm

   [dis-kuhn-furm]
verb (used with object)
to prove to be invalid.
Origin:
1935–40; dis- + confirm

Related forms
dis·con·fir·ma·tion  [dis-kon-fer-mey-shuhn, dis-kon-] , noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Disconfirm is one of our favorite verbs.
So is yaff. Does it mean:
to run away hurriedly; flee.
to bark; yelp.
LEARN MORE FUN, UNUSUAL VERBS WITH WORD DYNAMO...
Collins
World English Dictionary
disconfirm (ˌdɪskənˈfɜːm)
 
—vb
(tr) (of a fact or argument) to suggest that a hypothesis is wrong or ill-formulated
 
disconfir'mation
 
—n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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