unappetising vs British spelling

unappetising is not a noun while British spelling is a noun.

Word	Noun	Adjective	Verb	Adverb
unappetising	No	Yes	No	No
British spelling	Yes	No	No	No

unappetising (noun)	British spelling (noun)
	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')

unappetising (adjective)	British spelling (adjective)
not appetizing in appearance, aroma, or taste