1. (

• coarse ,
• common ,
• rough-cut ,
• uncouth ,
• 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;

2. (

• common ,
• plebeian ,
• vulgar ,
• unwashed

) 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" ;

3. (

• common ,
• vernacular ,
• vulgar ,

) 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" ;

4. (

• crude ,
• earthy ,
• gross ,
• vulgar

) 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" ;