"vulgarest" in the adjective sense
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"
Source: WordNet® (An amazing lexical database of English)
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