the act of refusing to comply (as with a request)
"it resulted in a complete denial of his privileges"
the act of asserting that something alleged is not true
"Despite the overwhelming evidence, he insisted on denial by claiming he had never been at the scene."
(psychiatry) a defense mechanism that denies painful thoughts
"After losing his job, he lived in denial about how much money he had lost and refused to apply for any new positions."
renunciation of your own interests in favor of the interests of others
"She showed great denial by refusing to take her seat on the bus so that a disabled passenger could stand instead."
The negation in logic.
"In formal logic, the denial of a proposition asserts that the statement is false."
The word denial comes from combining the verb deny with the suffix -al. It entered English as a noun form to describe the act of refusing to admit something or stating that it is not true.