Crosswordiee.com

% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Slang for spoil, with "up.":

QUEERS: Spoils: Slang.
GUMUP: Spoil, in slang
LOUSE: Slang for spoil, with "up."
TEARIT: Spoil everything, in slang