Question

what comes down but never comes up

Answer 1

Answer:

rain always falls down but never goes up

Answer 2

Answer:

if you are asking this in a riddle way, the answer is Rain

but if not, according to my opinion it is a leaf

Explanation:

let me explain

Rain comes down but never goes up yes,

but due to evaporation the water created by rain actually goes up

On the other hand, when a leaf falls down from a tree, there is no way [automatically or manually] it will go back up.

say wind, but, it never returns to sender [the particular tree from which it came from

Hope this helps

Have a great day