PRECIPITOUS

[adjective]If a slope is precipitous, it is very steep.We slowly made our way down the precipitous mountain path.He always chooses the most precipitous slopes to ski down because he loves a challenge.The company has suffered from a precipitous decline in orders.If a reduction or increase is precipitous, it is fast or great.a precipitous rateOver the past 18 months, there has been a precipitous fall in car sales.