Adjectives

(a)nasty, awfuloffensive or even (of persons) malicious“in a nasty mood”, “a nasty accident”, “a nasty shock”, “a nasty smell”, “a nasty trick to pull”, “Will he say nasty things at my funeral?” (Ezra Pound)
(s)nasty, tightexasperatingly difficult to handle or circumvent“a nasty problem”, “a good man to have on your side in a tight situation”
(s)cruddy, filthy, foul, nasty, smuttycharacterized by obscenity“had a filthy mouth”, “foul language”, “smutty jokes”
(s)filthy, foul, nastydisgustingly dirty; filled or smeared with offensive matter“as filthy as a pigsty”, “a foul pond”, “a nasty pigsty of a room”