Fall-Rise
Descend- Ascend
fall, drop, sink, go down, plunge, dive, tumble, plummet
Descend.
The opposite is descend (go down the stairs).
The opposite is "descend" (go down).
TO fall or fallen
You have spelled it correctly: descend. The noun form is descent. The opposite--going up--is ascend.
descend,go down,fall,sink
To drop or descend means to move downward or fall from a higher position to a lower one. This can refer to physical objects or oneself moving in a downward direction.
The antonym (opposite)m is descend. (go down)
Depth
The likely word sought is ascend (go upward), the opposite of descend.
Depth. To ascend is to go up, and to descend is go down. We measure the height of things above the ground and the depth of things below the ground.