disconfirm

[dis-kuhn-furm]
verb (used with object)
to prove to be invalid.

Origin:
1935–40; dis- + confirm

disconfirmation [dis-kon-fer-mey-shuhn, dis-kon-] , noun
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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

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Example sentences
The change process begins when the organization experiences disconfirmation.
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