prehistoric

adj. from the period before written history, preceding written historical records; old, ancient, antiquated, out-of-date (Slang)

Prehistory (Latin, præ = before Greek, ιστορία = history) is a term often used to describe the period before written history. Paul Tournal originally coined the term Pré-historique in describing the finds he had made in the caves of southern France. It came into use in French in the 1830s to describe the time before writing, and was introduced into English by Daniel Wilson in 1851.
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Adjective
1. belonging to or existing in times before recorded history; "prehistoric settlements"; "prehistoric peoples"
(synonym) prehistorical
(similar) past
2. of or relating to times before written history; "prehistoric archeology"
(pertainym) prehistory, prehistoric culture
3. no longer fashionable; "my mother has these prehistoric ideas about proper clothes"
(similar) unfashionable, unstylish
(classification) colloquialism

(a.)
Of or pertaining to a period before written history begins; as, the prehistoric ages; prehistoric man.
  

Synonyms and related words:
aboriginal, ancestral, ancient, antediluvian, antepatriarchal, antiquated, atavistic, autochthonous, earliest, early, erstwhile, fore, former, fossil, humanoid, immemorial, late, old, old-fashioned, olden, once, onetime, passe, past, patriarchal, preadamite, preglacial, prehuman, previous, primal, prime, primeval, primitive, primogenial, primoprimitive, primordial, prior, pristine, protohistoric, protohuman, quondam, recent, sometime, then