Remiss; backward; not using due diligence or care; not earnest or eager; as, slack in duty or service.
Not violent, rapid, or pressing; slow; moderate; easy; as, business is slack.
To be remiss or backward; to be negligent.
To abate; to become less violent.
To lose rapidity; to become more slow; as, a current of water slackens.
To neglect; to be remiss in.
To cause to become less eager; to repress; to make slow or less rapid; to retard; as, to slacken pursuit; to slacken industry.
To cause to become less intense; to mitigate; to abate; to ease.
be inattentive to, or neglect; "He slacks his attention"
make less active or fast; "He slackened his pace as he got tired"; "Don't relax your efforts now"
become slow or slower; "Production slowed"
make less active or intense
become less in amount or intensity; "The storm abated"; "The rain let up after a few hours"