Definition of disconfirmatory in US English:

disconfirmatory

adjective

  • Showing that a belief or hypothesis is not or may not be true.

    ‘disconfirmatory evidence to challenge the fear response’
    ‘they were oblivious to disconfirmatory data’

Pronunciation

disconfirmatory

/ˌdɪskənˈfərməˌtɔri//ˌdiskənˈfərməˌtôrē/