prehistoric
adjective
[ priːhɪˈstɒrɪk ]
• relating to or denoting the period before written records.
• "prehistoric man"
Similar:
primitive,
primeval,
primordial,
primal,
earliest,
ancient,
early,
antediluvian,
pristine,
primigenial,
Origin:
mid 19th century: from French préhistorique (see pre-, historic).