preagricultural
adjective
pre·ag·ri·cul·tur·al ˌprē-ˌa-gri-ˈkəl-ch(ə-)rəl 
variants or pre-agricultural
: existing or occurring before the practice of agriculture
preagricultural times
a preagricultural hunter-gatherer society
Word History
First Known Use
1898, in the meaning defined above