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1. The evasion of work or duty
   - shirking, soldiering, goofing off [N. Amer, informal], goldbricking [N. Amer, informal]

1. Avoid responsibilities and work, be idle
    
2. Be inattentive to, or neglect
   "He slacks his attention"
    
3. Release tension on
   "slack the rope"
    
4. Make less active or fast
   "He slacked his pace as he got tired";
   - slacken, slack up, relax
    
5. Become slow or slower
   - slow, slow down, slow up, slacken
    
6. Make less active or intense
   - slake, abate
    
7. Become less in amount or intensity
   "The storm slacked off";
   - abate, let up, slack off, die away
    
8. Cause to heat and crumble by treatment with water
   "slack lime";
   - slake

Type of: decrease, diminish, dodging, escape, evasion, fall, fiddle, goldbrick [N. Amer, informal], hydrate, lessen, loose, loosen, minify, neglect, shirk, shrink from, weaken

Encyclopedia: Slacking