straight down
- verticalAt right angles groundward
- plummetRapid downward descent
- freefallUnimpeded downward motion
- diveHeadfirst water entry
- dropFall or release
nosedive · descend · gravity · steep · perpendicular · sheer · cliff · elevator · plunge · downward · fall · arrow · rain · cascade · tumble · bottomless · pit · shaft
vertical direction
straight downstraight up
Undiluted and unchilled
upward · skyward · up · heavenward · aloft
trajectory linearity
straight downzigzagging
Moving in sharp turns
circuitously · at an angle · diagonally · meandering · winding