ill-humored vs curmudgeonly

ill-humored and curmudgeonly both are adjectives.

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

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

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

ill-humored (adjective)	curmudgeonly (adjective)
brusque and surly and forbidding	brusque and surly and forbidding