WordWeb Online

1. Designed to incite to indecency or lust
   "the dance often becomes flagrantly obscene"
    
2. Offensive to the mind
   "the obscene massacre at Wounded Knee";
   - abhorrent, detestable, repugnant, repulsive, absonant [archaic]
    
3. Suggestive of or tending to moral looseness
   "obscene telephone calls";
   - lewd, raunchy [informal], salacious

Derived forms: obscener, obscenest

See also: dirty, indecent, offensive

Encyclopedia: Obscene