(1):

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

(2):

(n.) Anticipation.

(3):

(v. t.) To anticipate; to make before the true time.

(4):

(v. t.) To precede in time.

(5):

(v. t.) To date before the true time; to assign to an earlier date; thus, to antedate a deed or a bond is to give it a date anterior to the true time of its execution.