"nastier" in the adjective sense
1. nasty, awful
offensive 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
2. nasty, tight
exasperatingly difficult to handle or circumvent
"a nasty problem"
"a good man to have on your side in a tight situation"
3. cruddy, filthy, foul, nasty, smutty
characterized by obscenity
"had a filthy mouth"
"foul language"
"smutty jokes"
4. filthy, foul, nasty
disgustingly dirty filled or smeared with offensive matter
"as filthy as a pigsty"
"a foul pond"
"a nasty pigsty of a room"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License