vulgar

lacking refinement or cultivation or taste

• “he had coarse manners but a first-rate mind”
• “behavior that branded him as common”
• “an untutored and uncouth human being”
• “an uncouth soldier--a real tough guy”
• “appealing to the vulgar taste for violence”
• “the vulgar display of the newly rich”

of or associated with the great masses of people

• “the common people in those days suffered greatly”
• “behavior that branded him as common”
• “his square plebeian nose”
• “a vulgar and objectionable person”
• “the unwashed masses”

being or characteristic of or appropriate to everyday language

• “common parlance”
• “a vernacular term”
• “vernacular speakers”
• “the vulgar tongue of the masses”
• “the technical and vulgar names for an animal species”

conspicuously and tastelessly indecent

• “coarse language”
• “a crude joke”
• “crude behavior”
• “an earthy sense of humor”
• “a revoltingly gross expletive”
• “a vulgar gesture”
• “full of language so vulgar it should have been edited”