Backdate

//ˈbæk.deɪt// noun, verb

Definitions

Noun
  1. 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 […]"

Verb
  1. 1
    To give or assign a date to a document that is earlier than the current or true date.
  2. 2
    make effective from an earlier date wordnet

Etymology

Etymology 1

From back + date.

Etymology 2

From back + date.

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