slow down

verbs

lose velocity; move more slowly

"The car decelerated"

decelerate, retard, slow, slow down, slow up

is derived from

become slow or slower

"Production slowed"

slack, slacken, slow, slow down, slow up

is derived from

cause to proceed more slowly

"The illness slowed him down"

slow, slow down, slow up

is derived from

reduce the speed of

"He slowed down the car"

decelerate, slow down

is derived from

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"

decompress, loosen up, relax, slow down, unbend, unwind