unfire

English

From un- +‎ fire.

unfire (third-person singular simple present unfires, present participle unfiring, simple past and past participle unfired)

(transitive) Hypothetically, to undo the firing of (a weapon).
You can't unfire a gun.
(transitive) To hire again (a person who was fired).
- 2004, Spider-Man 2 (film)
  J. J. Jameson: [talking to Peter Parker] Where you been? Looked for you all morning! Why don't you pay your phone bill? Mad scientist goes berserk and we don't have pictures! […] Where were you? Photographing squirrels? You're fired!
  
  Receptionist: Chief, the planetarium party.
  
  J. J. Jameson: Oh, right. You're unfired. I need you to come here. What do you know about high society? […] Don't answer that. My society photographer got hit in the head by a polo ball. You're all I got.