Two ways to outface with a contradiction (6)
I believe the answer is:
denial
'contradiction' is the definition.
(thesaurus)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for denial that I've seen before include "Refusal to accept an unpalatable truth" , "Rejection of a request" , "Repudiation" , "Daniel (anag.)" , "Refusal to believe an unacceptable truth" .)