unripened vs unripe

unripened and unripe both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unripened	No	Yes	No	No
unripe	No	Yes	No	No

As adjectives, unripened and unripe are synonyms defined as:

Other synonyms of unripened include green, immature.

unripened (adjective)	unripe (adjective)
not fully developed or mature; not ripe	not fully developed or mature; not ripe
	not fully prepared