anaesthetize vs anaesthetise

anaesthetize and anaesthetise both are verbs.

Word	Noun	Adjective	Verb	Adverb
anaesthetize	No	No	Yes	No
anaesthetise	No	No	Yes	No

As verbs, anaesthetize and anaesthetise are synonyms defined as:

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

anaesthetize (verb)	anaesthetise (verb)
administer an anesthetic drug to	administer an anesthetic drug to