backdate

American  

[bak-deyt] / ˈbækˌdeɪt /

verb (used with object)

backdated, backdating

1. to date earlier than the actual date; predate; antedate.

   Backdate the letter so he'll think I wrote it last week.

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backdate British  

/ ˌbækˈdeɪt /

verb

1. (tr) to make effective from an earlier date

   the pay rise was backdated to August

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Etymology

Origin of backdate

An Americanism dating back to 1945–50; back ² + date ¹

Example Sentences

The government did not put any more money on the table, but the tweaked proposals backdated this year's pay increase by three months, meaning workers end up with a bigger lump sum upfront.

From BBC

The co-conspirator proposed backdating the transaction to erase any debt he might owe, as transfers from Alameda were recorded as “loans,” according to the indictment.

From Washington Post

A sum of almost £1,500 was also taken out of Saskia's bank account as a backdated payment, in March, leaving her in debt.

From BBC

While traders won’t “pay much attention to this backdated GDP data,” they will watch how the delta variant is hitting the wider growth trajectory, ING analysts said in a report.

From Seattle Times

Lord Burns backdated the sentence to 23 January 2017, when Alexander was placed in custody.

From BBC