slope

sloppy Joe

to be sloshed

to be no slouch at something

slow of comprehension

to be slow on the uptake

slow in the uptake

slow in the mind

to do a slow burn

slow burn

slow

Slow and steady wins the race.

slow day

slow-going

as slow as a dead snail

Slow down

slow-coach

to be slow off the mark

to be a slow coach

to be slow on the uptake/slow to catch on

go-slow

to slow to a walk

slowcoach

slowcoach /slowpoke

slowly