Troglodyte (noun)

1. A person who lives in a cave or a primitive dwelling place.
2. A person who is considered to be primitive or backward, especially in their social or cultural attitudes.
3. An anthropoid primate of the genus Troglodytes, such as the common chimpanzee.

Origin:

The word "troglodyte" comes from the greek word "troglodutēs" which means "cave-dweller" from "trogle" meaning "cave" and "dutēs" meaning "dweller".

Examples:

1. The troglodytes of the prehistoric age lived in caves.
2. He was called a troglodyte for his outdated views on technology.
3. The troglodytes were not known to have any kind of written language.
4. The troglodyte is one of the closest living relatives of humans.
5. Troglodyte chimpanzees are found in many parts of Africa.