Main entry: primitive, archaic
Definition: little evolved from or characteristic of an earlier ancestral type
Usage: archaic forms of life; primitive mammals; the okapi is a short-necked primitive cousin of the giraffe
Main entry: antediluvian, antiquated, archaic
Definition: so extremely old as seeming to belong to an earlier period
Usage: a ramshackle antediluvian tenement; antediluvian ideas; archaic laws