forfeited vs forfeit

forfeited is not a noun while forfeit is a noun.

Word	Noun	Adjective	Verb	Adverb
forfeited	No	Yes	No	No
forfeit	Yes	Yes	Yes	No

As adjectives, forfeited and forfeit are synonyms defined as:

Other synonyms of forfeited include confiscate.

forfeited (noun)	forfeit (noun)
	the act of losing or surrendering something as a penalty for a mistake or fault or failure to perform etc.
	a penalty for a fault or mistake that involves losing or giving up something
	something that is lost or surrendered as a penalty

forfeited (adjective)	forfeit (adjective)
surrendered as a penalty	surrendered as a penalty

forfeited (verb)	forfeit (verb)
	lose (something) or lose the right to (something) by some error, offense, or crime