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[ US /ˈsɫæk/ ]
[ UK /slˈæk/ ]
NOUN
  1. a soft wet area of low-lying land that sinks underfoot
  2. a stretch of water without current or movement
    suddenly they were in a slack and the water was motionless
  3. a cord or rope or cable that is hanging loosely
    he took up the slack
  4. the quality of being loose (not taut)
    he hadn't counted on the slackness of the rope
  5. dust consisting of a mixture of small coal fragments and coal dust and dirt that sifts out when coal is passed over a sieve
  6. a noticeable deterioration in performance or quality
    a gradual slack in output
    a falloff in quality
    the team went into a slump
    a drop-off in attendance
VERB
  1. become slow or slower
    Production slowed
  2. avoid responsibilities and work, be idle
  3. cause to heat and crumble by treatment with water
    slack lime
  4. become less in amount or intensity
    The rain let up after a few hours
    The storm abated
  5. be inattentive to, or neglect
    He slacks his attention
  6. release tension on
    slack the rope
  7. make less active or fast
    Don't relax your efforts now
    He slackened his pace as he got tired
  8. make less active or intense
ADJECTIVE
  1. flowing with little speed as e.g. at the turning of the tide
    slack water
  2. not tense or taut
    the old man's skin hung loose and grey
    a slack grip
    slack and wrinkled skin
    slack sails
    a slack rope
  3. lacking in rigor or strictness
    slack in maintaining discipline
    lax in attending classes
    such lax and slipshod ways are no longer acceptable

How To Use slack In A Sentence

  • On the other hand, a blazer and slacks would probably be acceptable. Times, Sunday Times
  • You skin looks a bit slack and grey. Life Without Work
  • Luke was a brilliant student despite the fact that he was a notorious slacker.
  • Most critics acknowledge that there is a political core in slacktivism, even if it may be very well hidden.
  • If you slacked you were given a poke from a guard with his Bayonet. Eric Batty
  • The assembled opposition members, journalists and tourism industry heavies were slack-jawed.
  • It still whispered about, prowling in the back of his consciousness, murmuring darkly even though his body was slack with well-satisfied relief. Captured by Moonlight
  • The U.S. economy is operating with a massive amount of slack" or unutilized resources such as workers and manufacturing capacity says Sal Guatieri, an economist at Toronto-based BMO Capital Markets. Canada Bank Shift Signals Strong Recovery
  • I quit talking as his hands began to knead my tired, knotted muscles and one by one, I felt them all begin to slacken.
  • She wore conservative Romulan clothing, including black slacks and a long-sleeved ultramarine blouse. Star Trek: Typhon Pact: Rough Beasts of Empire
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