irrevocable

Irrevocable POA in common words is a power of attorney that cannot be revoked by the principal.

A power of attorney lapses for legal reasons (by operation of law) such as for mental incapacity or death. An irrevocable power of attorney will not lapse because it is continuing (enduring) and irrevocable, cannot be cancelled. An irrevocable power of attorney must say that it is irrevocable and it must be given for valuable consideration.