undeclare

== English == === Etymology === From un- +‎ declare. === Verb === undeclare (third-person singular simple present undeclares, present participle undeclaring, simple past and past participle undeclared) (transitive) To reverse the process of declaring; to unsay. (transitive, programming) To revoke the declaration of (a variable, namespace, etc.) so that it is no longer available. === Anagrams === Aden ulcer, uncleared