#1
slacken v. [
slow, slow down, slow up, slack] become slow or slower; "Production slowed"
. wn #2
slacken v. [
slack, slack up, relax] make less active or fast; "He slackened his pace as he got tired"; "Don't relax your efforts now"
. wn #3
slacken v. become looser or slack; "the rope slackened"
. wn #4
slacken v. [
remit] make slack as by lessening tension or firmness
. wn