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