slow down
verb.
lose velocity; move more slowly
The car decelerated
verb.
become slow or slower
Production slowed
verb.
cause to proceed more slowly
The illness slowed him down
Synonym: slow, slow up
verb.
reduce the speed of
He slowed down the car
Synonym: decelerate
verb.
become less tense, rest, or take one's ease
He relaxed in the hot tub|Let's all relax after a hard day's work