adjective
[more ~; most ~]
of, belonging to, or seeming to come from an early time in the very ancient past
not having a written language, advanced technology, etc.
very simple and basic :made or done in a way that is not modern and that does not show much skill
coming from the part of a person that is wild or like an animal :not based on reason
noun
plural -tives
[count] formal
an artist who makes art in a simple style that is childlike also; :the art made by such an artist
old-fashioned :someone who belongs to a primitive society