nipata
nipāta-vega — the force of diving;
SB 3.13.29
ati-ucca-nipāta — because of falling from a great height;
SB 5.16.19
vajra-nipāta-śańkayā — by suspecting that thunderbolts were falling;
SB 10.6.12
nipāta-vega — by the force of the fall;
SB 10.16.7