· dust consisting of a mixture of small coal fragments and coal dust and dirt that sifts out when coal is passed over a sieve

Hypernym(s): debris, dust, junk, rubble, detritus

· 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"

Synonym(s): slump, drop-off, falloff, falling_off

Hypernym(s): deterioration, decline_in_quality, declension, worsening

· a stretch of water without current or movement; "suddenly they were in a slack and the water was motionless"

Synonym(s): slack_water

Hypernym(s): stretch

· a soft wet area of low-lying land that sinks underfoot

Synonym(s): mire, quagmire, quag, morass

Hypernym(s): bog, peat_bog

· the quality of being loose (not taut); "he hadn't counted on the slackness of the rope"

Synonym(s): slackness

Hypernym(s): looseness, play

· a cord or rope or cable that is hanging loosely; "he took up the slack"

Hypernym(s): cord

· avoid responsibilities and work, be idle

Hypernym(s): fiddle, shirk, shrink_from, goldbrick

· be inattentive to, or neglect; "He slacks his attention"

Hypernym(s): neglect

· release tension on; "slack the rope"

Hypernym(s): loosen, loose

· make less active or fast; "He slackened his pace as he got tired"; "Don't relax your efforts now"

Synonym(s): slacken, slack_up, relax

Hypernym(s): decrease, lessen, minify

· become slow or slower; "Production slowed"

Synonym(s): slow, slow_down, slow_up, slacken

Hypernym(s): weaken

· make less active or intense

Synonym(s): slake, abate

Hypernym(s): decrease, lessen, minify

· become less in amount or intensity; "The storm abated"; "The rain let up after a few hours"

Synonym(s): abate, let_up, slack_off, die_away

Hypernym(s): decrease, diminish, lessen, fall

· cause to heat and crumble by treatment with water; "slack lime"

Synonym(s): slake

Hypernym(s): hydrate

· not tense or taut; "the old man's skin hung loose and grey"; "slack and wrinkled skin"; "slack sails"; "a slack rope"; "a slack grip"

Synonym(s): loose

· flowing with little speed as e.g. at the turning of the tide; "slack water"

· lacking in rigor or strictness; "such lax and slipshod ways are no longer acceptable"; "lax in attending classes"; "slack in maintaining discipline"

Synonym(s): lax