Princeton's WordNet

1. coarse, common, rough-cut, uncouth, vulgar(adj)

   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"

2. common, plebeian, vulgar, unwashed(adj)

   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(adj)

   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(adj)

   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"

Kernerman English Learner's Dictionary

1. vulgar(adjective)ˈvʌl gər

   (of language, a joke, etc.) likely to cause offense; = crude

   a vulgar expression; the vulgarity of his language

Wiktionary

1. vulgar(Adjective)

   Debased, uncouth, distasteful, obscene.

2. vulgar(Adjective)

   Having to do with ordinary, common people.

Origin: Middle English, from vulgaris, from volgus, vulgus, from wl̥k- (compare Welsh gwala, ἁλία εἰλέω, вєликъ.

Webster Dictionary

1. Vulgar(adj)

   of or pertaining to the mass, or multitude, of people; common; general; ordinary; public; hence, in general use; vernacular

2. Vulgar(adj)

   belonging or relating to the common people, as distinguished from the cultivated or educated; pertaining to common life; plebeian; not select or distinguished; hence, sometimes, of little or no value

3. Vulgar(adj)

   hence, lacking cultivation or refinement; rustic; boorish; also, offensive to good taste or refined feelings; low; coarse; mean; base; as, vulgar men, minds, language, or manners

4. Vulgar(noun)

   one of the common people; a vulgar person

5. Vulgar(noun)

   the vernacular, or common language

• vulgêrAfrikaans
• فَظ، خَشِنArabic
• вулгаренBulgarian
• vulgarPortuguese (BR)
• vulgárníCzech
• vulgärGerman
• plat; vulgærDanish
• χυδαίος, χοντροκομμένος (μτφ.)Greek
• vulgar, ordinarioSpanish
• labaneEstonian
• بی ادب؛ زنندهFarsi
• sivistymätönFinnish
• vulgaireFrench
• גַסHebrew
• असंस्कृतHindi
• prostački, vulgaranCroatian
• közönséges, trágár, vulgárisHungarian
• tidak sopan, kasarIndonesian
• grófur, óheflaður; lágkúrulegurIcelandic
• volgareItalian
• 卑俗なJapanese
• (행동, 말씨, 의복 등이) 상스러운, 천한Korean
• vulgarusLithuanian
• vulgārs; piedauzīgs; prastsLatvian
• tdk beradabMalay
• platDutch
• vulgær, grovNorwegian
• wulgarnyPolish
• بی ادب؛ زنندهPersian
• شډل، شاړ، بې ډبه، مبتذل: ولسي: عاميانه: ولس: ولسي، سكنى: ناروزلى، بې ډبه: بې ذوقهPashto
• ordinárioPortuguese
• vulgarRomanian
• вульгарныйRussian
• hrubý, neotesaný, vulgárnySlovak
• nespodoben, prostaškiSlovenian
• vulgaranSerbian
• vulgärSwedish
• หยาบคายThai
• kaba, terbiyesizTurkish
• 粗俗的, 低級的Chinese (Trad.)
• грубий, вульгарнийUkrainian
• بازاريUrdu
• thiếu tế nhị, tầm thườngVietnamese
• 粗陋的，粗俗的，庸俗的Chinese (Simp.)