patronizingly vs patronisingly

patronizingly and patronisingly both are adverbs.

Word	Noun	Adjective	Verb	Adverb
patronizingly	No	No	No	Yes
patronisingly	No	No	No	Yes

As adverbs, patronizingly and patronisingly are synonyms defined as:

patronizingly and patronisingly: with condescension; in a patronizing manner

Other synonyms of patronizingly include condescendingly.

patronizingly (adverb)	patronisingly (adverb)
with condescension; in a patronizing manner	with condescension; in a patronizing manner