Simple past tense and past participle of euthanize.(verb)
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Use "euthanized" in a sentence
"I won't use the term euthanized, which implies a humane death, and I can say that based on his description, at least a number of dogs did not have a humane death."
"I think that the two dogs should be euthanized, which is what I understand they are planning to do."
"Not euthanized, which is a mercy term, but killed."