antedate

/ˌæntɪˈdeɪt/
noun
  1. A date that is earlier than the actual date; an earlier date.
    • They discovered an antedate on the old map.
    • The antedate on the receipt caused confusion at the bank.
    • The document bore an antedate of 1999, though it was written in 2005.
verb
  1. To exist or happen before something else in time; to be older than.
    • These fossils antedate the dinosaurs by millions of years.
    • The custom of exchanging gifts antedates modern Christmas traditions.
    • Some of the ruins antedate the Roman Empire.
  2. To assign a date to a document or event that is earlier than the actual date.
    • She accidentally antedated the check by a week.
    • Historians discovered that the letter had been antedated to make it seem more important.
    • The lawyer warned him not to antedate the contract.
Antonyms
What does "antedate" mean? | whatsthatwordmean | whatsthatwordmean