foreswear vs forgo

foreswear and forgo both are verbs.

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

As verbs, foreswear and forgo are synonyms defined as:

Other synonyms of foreswear include dispense with, forego, relinquish, waive.

foreswear (verb)	forgo (verb)
turn away from; give up	lose (something) or lose the right to (something) by some error, offense, or crime
do without or cease to hold or adhere to	do without or cease to hold or adhere to
	be earlier in time; go back further