slow
US /sloʊ/
UK /sloʊ/

1.
2.
not quick to understand or learn; dull-witted
:
•
He's a bit slow when it comes to math.
•
Don't be so slow, figure it out!
1.
reduce the speed of or cause to operate at a slower rate
:
•
You need to slow down when approaching the curve.
•
The heavy traffic began to slow our progress.