a.
1.
Indecent, indelicate, immodest, impure, ribald, gross, coarse, broad, unchaste, lewd, loose, smutty, offensive, shameless, filthy.
2.
Dirty, filthy, foul, offensive, disgusting.
3.
Inauspicious, ill-omened, ill-boding.
OBSCENE
Meaning of OBSCENE in English
Soule. Dictionary of English synonyms. Словарь английских синонимов. 2012