Another way of saying "to accept". Since the verb "to notdeny" consists of "not" and "deny", the final outcome is an affimation, which is an equivalent to "to accept" or "to admit". "To notdeny" is a transitive verb, therefore, you must add a direct obejct when using it. It could also be used a reporting verb.

(noun) A successful type of theft which results in an acceptable, impressive and rewarding payday for the protagonist.