obscenity

ob|scen|ity /ɒbs'enɪti/ (obscenities)
1 [N-UNCOUNT]
Obscenity is behaviour, art, or language that is sexual and offends or shocks people.
He insisted these photographs were not art but obscenity...
2 [N-VAR]
An obscenity is a very offensive word or expression.
They shouted obscenities at us and smashed bottles on the floor.