undefine

English

Etymology

From un- +‎ define.

Verb

undefine (third-person singular simple present undefines, present participle undefining, simple past and past participle undefined)

  1. (transitive) To make indefinite; to obliterate or confuse the definition or limitations of.
  2. (programming, transitive) To remove the definition of; to return to an undefined state.