Commoner (noun)

1. A person who is not of noble birth or who is not a member of the aristocracy.
2. A person who is not of noble birth or who is not a member of the aristocracy, and who is considered to be a member of the common people.

Origin:

From common + -er.

Examples:

1. The princess married a commoner.
2. The king was a commoner before he became the ruler.
3. The commoners were not allowed to enter the palace.
4. The commoners were not allowed to participate in the government.
5. The queen's speech was not understood by the commoners.