vulgar

Short definition from Wiktionary

Adjective

1. 1
   Debased; uncouth; distasteful; obscene.
2. 2
   Having to do with ordinary, common people.
3. 3
   Common, usual; of the typical kind.
4. 4
   Being a vulgar fraction.

Noun

1. 1
   A common, ordinary person.
2. 2
   The common people.
3. 3
   The language of a people, especially the commoners.