anesthetise vs anesthetize

anesthetise and anesthetize both are verbs.

Word	Noun	Adjective	Verb	Adverb
anesthetise	No	No	Yes	No
anesthetize	No	No	Yes	No

As verbs, anesthetise and anesthetize are synonyms defined as:

Other synonyms of anesthetise include anaesthetise, anaesthetize, put out, put under.

anesthetise (verb)	anesthetize (verb)
administer an anesthetic drug to	administer an anesthetic drug to