crusty vs ill-humored

crusty and ill-humored both are adjectives.

Word	Noun	Adjective	Verb	Adverb
crusty	No	Yes	No	No
ill-humored	No	Yes	No	No

As adjectives, crusty and ill-humored are synonyms defined as:

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

crusty (adjective)	ill-humored (adjective)
having a hardened crust as a covering	brusque and surly and forbidding
brusque and surly and forbidding