This dissertation proposes an analysis of the concept of uncanny (from the German unheimlich; or infamiliar, the negation of familiarity) with a focus on finding its conditions of possibility in certain types of discourses in which this feeling both produces and is produced by a distinct form of time. The infamiliar is said to be a feeling which emerges both in daily life and in contact with certain works of fiction (as Freud notes in his essay of the same name, das Unheimliche), produced by a small distortion or variation of the familiar (that is, of that which is already known). It differs profoundly from the familiar all the while maintaining with the latter a superficial resemblance, that is, a similarity in appearance. This is its main characteristic, namely, being a simulacrum, or false copy, of the familiar. What follows is a deeper analysis of the types of discourse that are structured around simulacra, notably the sophist discourse. The uncanny is also characterized, in fiction, by often accompanying chronological contradictions which suggest a distortion of space and time in such stories. Therefore, we will also see how the type of discourse that operates through simulacra constructs a distinct form of time. Our goal is to blur the limits of the uncanny, showing that it is a product of certain particularities of language that are present in all types of discourses and so that it is neither very foreign to us nor restricted to a specific group of literary genres.