sincere vs unfeigned

sincere and unfeigned both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sincere	No	Yes	No	No
unfeigned	No	Yes	No	No

sincere (adjective)	unfeigned (adjective)
open and genuine; not deceitful	not pretended; sincerely felt or expressed
characterized by a firm and humorless belief in the validity of your opinions