1610s, now obsolete, but prefered by purists for the sense "high and steep" over the later formation precipitous.
- precipitation hardening,
- precipitin test,
Examples from the Web for precipitious
The hotel stood on a romantic elevation, a precipitious bluff, and commanded a magnificent view of the river and valley.Fifty Years In The Northwest|William Henry Carman Folsom
But, spurred by fears for his friend, he started downward for the precipitious trail leading directly towards it.