(げんし)

げんし
noun / no-adjective
primitive, primeval
See also: 原子(げんし) (atom)
1. primitive, primeval, prehistoric
Relating to the earliest period of human or natural history; in an original or undeveloped state.
Primitive people lived in caves.
Primeval forests remain on this island.
It's difficult to return to a primitive lifestyle.

原始(げんし) refers to something primitive, primeval, or in its original state. It often describes prehistoric times or undeveloped conditions.

Common compounds:

Note: Can be read as げんし or げんじ, with げんし being more common.

Homophone: 原子(げんし) (atom) - different kanji, different meaning