What is the meaning of slack?


  • Dust consisting of a mixture of small coal fragments and coal dust and dirt that sifts out when coal is passed over a sieve.
  • A noticeable deterioration in performance or quality.
    • usage: "the team went into a slump"; "a gradual slack in output"; "a drop-off in attendance"; "a falloff in quality"
  • A stretch of water without current or movement.
    • usage: "suddenly they were in a slack and the water was motionless"
  • A soft wet area of low-lying land that sinks underfoot.
  • The quality of being loose (not taut. )
    • usage: "he hadn't counted on the slackness of the rope"
  • A cord or rope or cable that is hanging loosely.
    • usage: "he took up the slack"


  • Avoid responsibilities and work, be idle.
  • Be inattentive to, or neglect.
    • usage: "He slacks his attention"
  • Release tension on.
    • usage: "slack the rope"
  • Make less active or fast.
    • usage: "He slackened his pace as he got tired"; "Don't relax your efforts now"
  • Become slow or slower.
    • usage: "Production slowed"
  • Make less active or intense.
  • Become less in amount or intensity.
    • usage: "The storm abated"; "The rain let up after a few hours"
  • Cause to heat and crumble by treatment with water.
    • usage: "slack lime"


  • Not tense or taut.
    • usage: "the old man's skin hung loose and grey"; "slack and wrinkled skin"; "slack sails"; "a slack rope"
  • Flowing with little speed as e. G. At the turning of the tide.
    • usage: "slack water"
  • Lacking in rigor or strictness.
    • usage: "such lax and slipshod ways are no longer acceptable"; "lax in attending classes"; "slack in maintaining discipline"
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APAWordNet. (2010). slack. Retrieved April 23, 2019, from http://smartdefine.org/slack/definitions/1183680
ChicagoWordNet. 2010. "slack" http://smartdefine.org/slack/definitions/1183680 (accessed April 23, 2019).
HarvardWordNet 2010, slack, Smart Define, viewed 23 April, 2019, <http://smartdefine.org/slack/definitions/1183680>.
MLAWordNet. "slack" 23 October 2010. Web. 23 April 2019. <http://smartdefine.org/slack/definitions/1183680>
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