"Antedated" is a word in ENGLISH

To date before the true time; to assign to an earlier date; thus, to antedate a deed or a bond …

Anticipation.

To precede in time.

Prior date; a date antecedent to another which is the actual date.

To anticipate; to make before the true time.

To date an instrument as of a time before the time it was written

of Antedate

antidit v [A; c16] antedate, assign an earlier date to a docu-ment than the true date. Antidítun (iantidit) lang nátù …

EN. Fraudulent suboma-tlon or concealment, with design to darken or hide the truth, and make things appear otherwise than they …

To date anticipation; to affix to (a document) an earlier than the actual date; to antedate; as, a predated deed …

The dating of an event before the time it happened; an antedating; -- opposed to metachronism.

To antedate.