changeling
From Longman Dictionary of Contemporary EnglishRelated topics: Folklorechangelingchange‧ling /ˈtʃeɪndʒlɪŋ/ noun [countable] literaryRF a baby that is believed to have been secretly exchanged for another baby by fairiesExamples from the Corpuschangeling• He was the changeling of the classic tale, thrust on good people, who was to repay good with evil.