Answer: slumping

AnswerCrossword Clue
SLUMPINGOn a losing streak
SLUMPINGSinking suddenly.
slumpingSLUMP, to sink suddenly
slumpingUndergo a sudden severe or prolonged fall in price, value, or amount
slumpingSit, lean, or fall heavily and limply, esp. with a bent back
slumpingFail or decline substantially