[1] : The Collaborative International Dictionary of English v.0.48

slack \slack\, a. compar. slacker; superl. slackest. oe.
   slak, as. sleac; akin to os. slak, ohg. slah, prov. g.
   schlack, icel. slakr, sw. slak; cf. skr. s.rj to let loose,
   to throw. cf. slake.
   lax; not tense; not hard drawn; not firmly extended; as, a
   slack rope.
   1913 webster

   2. weak; not holding fast; as, a slack hand. --milton.
      1913 webster

   3. remiss; backward; not using due diligence or care; not
      earnest or eager; as, slack in duty or service.
      1913 webster

            the lord is not slack concerning his promise, as
            some men count slackness.             --2 pet. iii.
                                                  9.
      1913 webster

   4. not violent, rapid, or pressing; slow; moderate; easy; as,
      business is slack. "with slack pace." --chaucer.
      1913 webster

            c?sar . . . about sunset, hoisting sail with a slack
            southwest, at midnight was becalmed.  --milton.
      1913 webster

   slack in stays naut., slow in going about, as a ship.

   slack water, the time when the tide runs slowly, or the
      water is at rest; or the interval between the flux and
      reflux of the tide.

   slack-water navigation, navigation in a stream the depth of
      which has been increased, and the current diminished, by a
      dam or dams.
      1913 webster

   syn: loose; relaxed; weak; remiss; backward; abated;
        diminished; inactive; slow; tardy; dull.
        1913 webster
see also:
slacker slackest slake slack in stays slack water slack-water navigation 

[2] : WordNet (r) 2.0

slacker
     n : a person who shirks their work or duty especially one who
         tries to evade military service in wartime syn: shirker
see also:
shirker 

[3] : Moby Thesaurus II by Grady Ward, 1.0

32 moby thesaurus words for "slacker":
   bungler, clock watcher, disregarder, dodger, eye-servant,
   goldbrick, goldbricker, goof-off, idler, ignorer, loafer,
   malingerer, neglecter, negligent, old soldier, procrastinator,
   shirk, shirker, skulk, skulker, slinker, sloven, slugabed,
   sluggard, slut, soldier, spiv, tax dodger, trifler, truant,
   waiter on providence, welsher

Slacker >> S Words
Slacker, definition of term: Slacker
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