primitive

adjective1 of 2

being of an early time period in the past

• “His wooden instruments were primitive even for his time.”Tatoeba
• “Smell is probably the most primitive of our senses.”Tatoeba

Sentences from Tatoeba show real usage. A word can have several meanings, so a sentence may use another one.

noun2 of 2

An original or primary word; a word not derived from another, as opposed to derivative.