euthanatise vs euthanatize

euthanatise and euthanatize both are verbs.

Word	Noun	Adjective	Verb	Adverb
euthanatise	No	No	Yes	No
euthanatize	No	No	Yes	No

As verbs, euthanatise and euthanatize are synonyms defined as:

euthanatise and euthanatize: intentionally cause the painless death of a person or animal

Other synonyms of euthanatise include euthanise, euthanize, mercy kill.

euthanatise (verb)	euthanatize (verb)
intentionally cause the painless death of a person or animal	intentionally cause the painless death of a person or animal