1. changeling - Noun
2. changeling - Adjective
One who, or that which, is left or taken in the place of another, as a child exchanged by fairies.
A simpleton; an idiot.
One apt to change; a waverer.
Taken or left in place of another; changed.
Given to change; inconstant.
Source: Webster's dictionaryIt was so much more complicated than it had to be, but the changeling had noted that this was true of every human biological function that wasn't involuntary. Joe Haldeman
This cruel age has deflected me, like a river from this course. Strayed from its familiar shores, my changeling life has flowed into a sister channel. How many spectacles I've missed: the curtain rising without me, and falling too. How many friends I never had the chance to meet. Anna Akhmatova
A changeling is one child substituted for another. I couldn't find anything more apt. We had to kind of fight that supernatural element in the publicity, and I offered to try and find another title, but Clint liked it, and it stayed. J. Michael Straczynski
Blood for life. Life for life. Changeling justice. Nalini Singh
After a year of war between the Federation and the Klingons, Worf joined a team sent to investigate claims that Gowron was a changeling in disguise. Source: Internet
After coming back from the dead, Bowen awakens in an underwater compound, being cared for by a Changeling doctor. Source: Internet