Filed from 4 published puzzles

ABYSMAL

Set to 4 different clues across 4 published puzzles, most often “Unable to get much worse” — The New York Times, Saturday, 8 May 2010.

7 letters

Every clue on record, most used first

Unable to get much worseonce
The New York Times — Saturday, 8 May 2010
Dreadfulonce
The New York Times — Wednesday, 9 May 2007
Really badonce
The New York Times — Friday, 25 January 2002
Wretchedonce
The New York Times — Wednesday, 22 November 1995

Other answers to these clues

ATROCIOUS9 letters
DIRE4 letters
HORRID6 letters
LOUSY5 letters
RATTY5 letters
SAD3 letters
SCUZZY6 letters
SEEDY5 letters
VILE4 letters
WOEFUL6 letters