Answer: frazzled

AnswerCrossword Clue
FRAZZLEDAt one's wits' end
FRAZZLEDEmotionally burned out
FRAZZLEDExhausted
FRAZZLEDWorn-out
frazzledFray
frazzledFRAZZLE, to fray (to wear by rubbing)
frazzledCause to feel completely exhausted; wear out