slacken   (Sound)

The verb slacken has 4 senses

• slow, slow down, slow up, slack, slacken -- (become slow or slower; "Production slowed")


• slack, slacken, slack up, relax -- (make less active or fast; "He slackened his pace as he got tired"; "Don't relax your efforts now")


• slacken -- (become looser or slack; "the rope slackened")


• slacken, remit -- (make slack as by lessening tension or firmness)