Answer: wearout

AnswerCrossword Clue
WEAROUTExhaust
WEAROUTBecome exhausted
WEAROUTBecome tired
WEAROUTTire
WEAROUTFatigue
WEAROUTBefore a big defeat, we get pooped (4,3)
WEAROUTExpend gradually
WEAROUTDeteriorate with use