ill-humoured vs curmudgeonly

ill-humoured and curmudgeonly both are adjectives.

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

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

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

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