antedate
/ˈæntiˌdeɪt/noun
-
Prior date; a date antecedent to another which is the actual date.
-
Anticipation
verb
-
To occur before an event or time; to exist further back in time.
-
To assign a date to a document or action earlier than the actual date; to backdate.
-
To find earlier citational evidence for a term.
Synonyms:
backdate, foredate, predate
Antonyms:
overdate, postdate, postdate