English dictionary

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English adjective: slack

1. slack not tense or taut

SamplesThe old man's skin hung loose and grey.
Slack and wrinkled skin.
Slack sails.
A slack rope.




2. slack flowing with little speed as e.g. at the turning of the tide

SamplesSlack water.



3. slack lacking in rigor or strictness

SamplesSuch lax and slipshod ways are no longer acceptable.
Lax in attending classes.
Slack in maintaining discipline.




English noun: slack

1. slack (substance) dust consisting of a mixture of small coal fragments and coal dust and dirt that sifts out when coal is passed over a sieve

Broader (hypernym)debris, detritus, dust, junk, rubble

2. slack (process) a noticeable deterioration in performance or quality

SamplesThe team went into a slump.
A gradual slack in output.
A drop-off in attendance.
A falloff in quality.

Synonymsdrop-off, falling off, falloff, slump

Broader (hypernym)declension, decline in quality, deterioration, worsening

3. slack (object) a stretch of water without current or movement

SamplesSuddenly they were in a slack and the water was motionless.

Synonymsslack water

Broader (hypernym)stretch

4. slack (object) a soft wet area of low-lying land that sinks underfoot

Synonymsmire, morass, quag, quagmire

Broader (hypernym)bog, peat bog

5. slack (attribute) the quality of being loose (not taut)

SamplesHe hadn't counted on the slackness of the rope.


Broader (hypernym)looseness, play

6. slack (artifact) a cord or rope or cable that is hanging loosely

SamplesHe took up the slack.

Broader (hypernym)cord

English verb: slack

1. slack (social) avoid responsibilities and work, be idle

Pattern of useSomebody ----s

Broader (hypernym)fiddle, goldbrick, shirk, shrink from

2. slack (cognition) be inattentive to, or neglect

SamplesHe slacks his attention.

Pattern of useSomebody ----s something

Broader (hypernym)neglect

3. slack (change) release tension on

SamplesSlack the rope.

Pattern of useSomebody ----s something.
Something ----s something

Broader (hypernym)loose, loosen

4. slack (change) make less active or fast

SamplesHe slackened his pace as he got tired.
Don't relax your efforts now.

Synonymsrelax, slack up, slacken

Pattern of useSomebody ----s something.
Something ----s something

Broader (hypernym)decrease, lessen, minify

5. slack (change) become slow or slower

SamplesProduction slowed.

Synonymsslacken, slow, slow down, slow up

Pattern of useSomething ----s.
Somebody ----s

Broader (hypernym)weaken

6. slack (change) make less active or intense

Synonymsabate, slake

Pattern of useSomebody ----s something.
Something ----s something

Broader (hypernym)decrease, lessen, minify

7. slack (change) become less in amount or intensity

SamplesThe storm abated.
The rain let up after a few hours.

Synonymsabate, die away, let up, slack off

Pattern of useSomething ----s

Broader (hypernym)decrease, diminish, fall, lessen

8. slack (change) cause to heat and crumble by treatment with water

SamplesSlack lime.


Pattern of useSomebody ----s something

Broader (hypernym)hydrate

Narrower (hyponym)air-slake

Based on WordNet 3.0 copyright © Princeton University.
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