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

Crossword clues for Sleep trouble:

TOSS: Have trouble sleeping, say
APNEA: Sleep trouble
LIEAWAKE: Have trouble sleeping
EVE: You might have trouble sleeping on one
TOSSANDTURN: Have trouble sleeping
SARTRE: Existentialist author of "Troubled Sleep."
TOSSES: Has trouble sleeping, maybe
EVES: Times when you might have trouble sleeping
APNEA: Breathing trouble during sleep