despeñar

to throw off a cliff; to fall or jump off a cliff

Etymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *d(w)is- Proto-Italic *dis- Latin dis- Old Spanish des- Spanish des- Proto-Indo-European *peth₂- Proto-Indo-European *-r̥ Proto-Indo-European *péth₂r̥ ~ pth₂én- Proto-Italic *petnā Latin penna Latin pinna Old Spanish penna Spanish peña Spanish -ar Spanish despeñar From des- + peña + -ar.