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backdate

1 ENTRIES FOUND:
backdate /ˈbækˌdeɪt/ verb
backdates; backdated; backdating
backdate
/ˈbækˌdeɪt/
verb
backdates; backdated; backdating
Britannica Dictionary definition of BACKDATE
[+ object]
: to give (something) an earlier date than the actual date : antedate
: to say that something began or became effective at a date earlier than the current date