Rube (noun)

1. A simple or unsophisticated person, especially one from a rural area.
2. A country bumpkin, a simpleton, a rustic.

Origin:

Mid 19th century: shortening of the given name reuben, originally used as a term of address to a rustic or countryman.

Examples:

1. The city slicker thought the farmer was a rube.
2. He was a rube from the sticks, never having seen a big city before.
3. The city-bred visitors looked upon the rural dwellers as rubes.
4. He was the typical rube, wearing overalls and a straw hat.
5. The rube was easily taken in by the con artist's tricks.