British spelling vs dehumanise

British spelling is a noun but dehumanise is not a noun.

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

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

British spelling (verb)	dehumanise (verb)
	make mechanical or routine
	deprive of human qualities