crossbred vs underbred

crossbred and underbred both are adjectives.

Word	Noun	Adjective	Verb	Adverb
crossbred	No	Yes	No	No
underbred	No	Yes	No	No

crossbred (adjective)	underbred (adjective)
bred from parents of different varieties or species	of inferior or mixed breed
	(of persons) lacking in refinement or grace