Why does "slow down" and "slow up" mean the same thing?

Answer 1

it`s just a new slang..like these ones..i`m UP for that is now..i`m DOWN wit dat..booty used to be a baby sock...now BOOTY is a butt..a HOE used to be a garden tool...and the only thing that used to blow was the WIND!!!

Answer 2

I wonder if slow down means to slow down on the down slope and slow up means to slow on an up slope.
Actually I think more like the idea of pulling up on the reigns to slow or stop a horse.
The same as to reign ones horse in.
--That Cheeky Lad

Answer 3

It's all relative to the position of the person asking for slowness. The terms are used in different contexts, but the outcome is the same: slow. So, I wouldn't go as far as saying they mean the same thing to the letter, but they ask for the same effect.

Answer 4

Slow up would be derived from "pull up", in the context of pulling up a horse driven cart, and later a car. So generally it should only be used when you are driving a vehicle.

Slow down is much more logical to use, as it contrasts with speed up - the numbers of your speed dial get higher, or go "up" as your speed increases, and thus "down" as your speed decreases.

I don't think that slow up is in common use in most of the English speaking world.

Em

Answer 5

Slow down means to relax (below normal efforts of exertion).

Slow up is when you start out too fast and need to slow down to a normal level.

Answer 6

Because the main word is slow

Answer 7

slow down is the spead slow up is the lifting of the foot of the exelerate, both acts do the same thing

Answer 8

cuz dey both cause u 2 slow ur movements

Answer 9

slow up??? i've never heard that before.

Answer 10

same reason that

this sucks and this blows both mean the same