backdate
nounEtymology From back + date.
1
An assigned date that is earlier than the current or true date.
- The backdates on the clearance forms made the little man's papers worthless […]2000, Jack Stewart, Hurricane, page 50:
backdate
verbUK /bækˈdeɪt/ · US /ˈbæk.deɪt/
Etymology From back + date.
1
To give or assign a date to a document that is earlier than the current or true date.