antedate vs forgo

antedate and forgo both are verbs.

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

As verbs, antedate and forgo are synonyms defined as:

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

antedate (verb)	forgo (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