lift.... Gravity
ascend and descend
Fall-Rise Descend- Ascend
Descend.
Width
Width
It depends on your airspeed. At normal cruise airspeed, an increase or decrease of engine thrust causes an aircraft to ascend or descend. At approach airspeed, a slower airspeed with flaps lowered, raising or lowering the elevators causes the aircraft to ascend or descend.
Depth
Width
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.
Planes control their altitude by changing the angle of the wings. To ascend, the pilot increases engine thrust to generate more lift. To descend, the pilot reduces engine power and adjusts the pitch of the aircraft to decrease lift.
The opposite is descend (go down the stairs).
The antonyms for deduct is to add, to increase, to raise.