adjective
An adjective is a word that describes or gives more information about a noun or pronoun. In this case, 'undeserved' describes something that is not earned or merited.
The award was given to him despite his undeserved reputation.
She got the promotion even though she didn't deserve it.
He got away with that undeserved bonus.
The punishment felt undeserved, like a punch in the gut.