slow

Someone who is slow; a sluggard.

A slow song.

To make (something) run, move, etc. less quickly; to reduce the speed of.

To keep from going quickly; to hinder the progress of.

To become slow; to slacken in speed; to decelerate.

Taking a long time to move or go a short distance, or to perform an action; not quick in motion; proceeding at a low speed.

"a slow train;  a slow computer"

Not happening in a short time; spread over a comparatively long time.

Of reduced intellectual capacity; not quick to comprehend.

Slowly.

"That clock is running slow."