prehistoric
//ˌpriːhɪˈstɒrɪk//
Adjective
prehistoricCanonical form
more prehistoricComparative
most prehistoricSuperlative
1
Relating to or denoting the period of human history before the invention of writing systems.
Archaeologists discovered prehistoric tools in the cave.
2
Extremely old or outdated; belonging to a very remote past.
My grandfather still uses a prehistoric computer that takes forever to start up.