an·te·date 
/ˈæntɪˌdeɪt/ verb an·te·dates; an·te·dat·ed; an·te·dat·ing
[
+ obj]
formal 1 : to give an earlier date rather than the actual date to (something)
▪ antedate a check —
opposite postdate
2 : to be earlier or older than (something)
: predate ▪ The church antedates the village itself. —
opposite postdate
