crusty vs curmudgeonly

crusty and curmudgeonly both are adjectives.

Word	Noun	Adjective	Verb	Adverb
crusty	No	Yes	No	No
curmudgeonly	No	Yes	No	No

As adjectives, crusty and curmudgeonly are synonyms defined as:

Other synonyms of crusty include gruff, ill-humored, ill-humoured.

crusty (adjective)	curmudgeonly (adjective)
having a hardened crust as a covering	brusque and surly and forbidding
brusque and surly and forbidding