A refusal or failure to provide or grant something that is requested or desired.
A disownment or disavowal
An assertion of untruth.
Refusal to believe that a problem exists.
A defense mechanism involving a refusal to accept the truth of a phenomenon or prospect.
Refusal to admit responsibility for wrongdoing.
Negationism, denialism of historical facts or accepted interpretation.
The negation in logic.
The act of refusing.
Depth or point at which well or borehole drilling cannot continue.