Why this word is great
REPLICANT — [Noun] A robot or artificial being that is an exact copy of a genuine lifeform, especially a human. From Latin replicāns ("replying"), present participle of replicō ("to reply"). The science fiction sense was coined by David Peoples in the 1982 film Blade Runner to describe bioengineered beings who mirror humanity so precisely that their artificiality is a secret even to themselves. Unlike "android" (which suggests a humanoid machine) or "clone" (a biological duplicate), a replicant is a manufactured facsimile, designed not just to resemble but to replace—to pass, to deceive, to haunt. It is the uncanny precision of a voice that sounds just like your dead lover’s, the too-perfect symmetry of a face you’ve seen in dreams, or the way a tear rolls down a cheek that shouldn’t be able to cry at all. The replicant asks, quietly, what it means to be real when the copy is flawless.