euthanatize vs euthanatise

euthanatize and euthanatise both are verbs.

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

As verbs, euthanatize and euthanatise are synonyms defined as:

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

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

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