ill-humored vs ill-humoured

ill-humored and ill-humoured both are adjectives.

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

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

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

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