1. (

• slow ,
• slow_down ,
• slow_up ,
• slack ,
• slacken ,

) become slow or slower; "Production slowed" ;

2. (

• slack ,
• slacken ,
• slack_up ,
• relax ,

) make less active or fast; "He slackened his pace as he got tired"; "Don't relax your efforts now" ;

3. (

• slacken

) become looser or slack; "the rope slackened" ;

4. (

• slacken ,
• remit

) make slack as by lessening tension or firmness ;