slack

nouns

dust consisting of a mixture of small coal fragments and coal dust and dirt that sifts out when coal is passed over a sieve
slack
is a type of (narrower)
the remains of something that has been destroyed or broken up
debris, detritus, dust, junk, rubble
a noticeable deterioration in performance or quality
"the team went into a slump"; "a gradual slack in output"; "a drop-off in attendance"; "a falloff in quality"
drop-off, falling off, falloff, slack, slump
a stretch of water without current or movement
"suddenly they were in a slack and the water was motionless"
slack, slack water
a soft wet area of low-lying land that sinks underfoot
mire, morass, quag, quagmire, slack
the quality of being loose (not taut)
"he hadn't counted on the slackness of the rope"
slack, slackness
a cord or rope or cable that is hanging loosely
"he took up the slack"
slack
is a type of (narrower)
a line made of twisted fibers or threads
"the bundle was tied with a cord"
cord

verbs

avoid responsibilities and work, be idle
slack
is derived from
slacker
is derived from
slacking
is a type of (narrower)
avoid (one's assigned duties)
"The derelict soldier shirked his duties"
fiddle, goldbrick, shirk, shrink from
be inattentive to, or neglect
"He slacks his attention"
slack
is derived from
slacking
is a type of (narrower)
fail to attend to
"he neglects his children"
neglect
release tension on
"slack the rope"
slack
is a type of (narrower)
make loose or looser
"loosen the tension on a rope"
loose, loosen
make less active or fast
"He slackened his pace as he got tired"; "Don't relax your efforts now"
relax, slack, slack up, slacken
become slow or slower
"Production slowed"
slack, slacken, slow, slow down, slow up
make less active or intense
abate, slack, slake
become less in amount or intensity
"The storm abated"; "The rain let up after a few hours"
abate, die away, let up, slack, slack off
cause to heat and crumble by treatment with water
"slack lime"
slack, slake

adjectives

not tense or taut
"the old man's skin hung loose and grey"; "slack and wrinkled skin"; "slack sails"; "a slack rope"
loose, slack
is derived from
slackness
flowing with little speed as e.g. at the turning of the tide
"slack water"
slack
is similar to
(of fluids) not moving or flowing
"mosquitoes breed in standing water"
standing
lacking in rigor or strictness
"such lax and slipshod ways are no longer acceptable"; "lax in attending classes"; "slack in maintaining discipline"
lax, slack
is derived from
slackness