Taking a longer time than usual to move or happen. The slow train took over an hour to reach the next station.
Not quick to understand or learn; lacking speed in mental processes. He was a bit slow in grasping the new concept during the lecture.
Not prompt or quick in action or response; sluggish. The slow response from the customer service team frustrated the clients.
Of a clock or watch: showing a time earlier than the correct time. Your watch is three minutes slow.
Indicating a time earlier than the correct time (of a clock or watch). My watch is five minutes slow.
Experiencing little or no activity; not busy. It was a slow day at the shop, with only a handful of customers.