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

Crossword clues for They can be tough to break:

MISHAP: Tough break
THATSTHEWAYTHE: With 67-Across, "Tough break" ... and an alternative title for today's puzzle
HABITS: They can be tough to break
HABIT: It might be tough to break one
SADNEWS: It's tough to break
HABIT: It's tough to break one
CNOTE: It's often tough to break
HABIT: Tough thing to break