anaesthetize vs anesthetise

anaesthetize and anesthetise both are verbs.

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

As verbs, anaesthetize and anesthetise are synonyms defined as:

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

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