euthanatise vs mercy kill

euthanatise and mercy kill both are verbs.

Word	Noun	Adjective	Verb	Adverb
euthanatise	No	No	Yes	No
mercy kill	No	No	Yes	No

As verbs, euthanatise and mercy kill are synonyms defined as:

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

Other synonyms of euthanatise include euthanatize, euthanise, euthanize.

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