antedate vs forego

antedate and forego both are verbs.

Word	Noun	Adjective	Verb	Adverb
antedate	No	No	Yes	No
forego	No	No	Yes	No

As verbs, antedate and forego are synonyms defined as:

Other synonyms of antedate include antecede, forgo, precede, predate.

antedate (verb)	forego (verb)
establish something as being earlier relative to something else	lose (something) or lose the right to (something) by some error, offense, or crime
be earlier in time; go back further	do without or cease to hold or adhere to
	be earlier in time; go back further