ill-favoured vs ill-favored

ill-favoured and ill-favored both are adjectives.

Word	Noun	Adjective	Verb	Adverb
ill-favoured	No	Yes	No	No
ill-favored	No	Yes	No	No

As adjectives, ill-favoured and ill-favored are synonyms defined as:

ill-favoured (adjective)	ill-favored (adjective)
usually used of a face	usually used of a face