euthanise vs euthanatise

euthanise and euthanatise both are verbs.

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

As verbs, euthanise and euthanatise are synonyms defined as:

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

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

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