moving, happening, or taking place at a low speed; not quick
The slow train took nearly two hours to reach the city.
Snails are famous for being very slow.
needing more time than usual to think, learn, or react
I can be slow at remembering names, so please be patient.
Mark is smart, but he is a little slow to catch jokes.
with little activity or few customers; not busy
Mondays are usually slow in the cafe, so the staff do extra cleaning.
Sales were slow during the winter months.
at a low speed; slowly (informal)
Drive slow when you go through the school zone.
He walked slow to enjoy the sunset.
to become or make something become slower
The car began to slow as it climbed the steep hill.
She raised her hand to slow the runners near the finish line.