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We found 51 dictionaries with English definitions that include the word slack:
Click on the first link on a line below to go directly to a page where "slack" is defined.

General dictionaries General (31 matching dictionaries)
  1. slack: Merriam-Webster.com [home, info]
  2. slack, slack: Oxford Learner's Dictionaries [home, info]
  3. slack, slack, slack: American Heritage Dictionary of the English Language [home, info]
  4. slack: Collins English Dictionary [home, info]
  5. slack: Vocabulary.com [home, info]
  6. slack, slack, slack: Macmillan Dictionary [home, info]
  7. Slack, slack: Wordnik [home, info]
  8. slack: Cambridge Advanced Learner's Dictionary [home, info]
  9. Slack, slack: Wiktionary [home, info]
  10. slack: Webster's New World College Dictionary, 4th Ed. [home, info]
  11. slack: The Wordsmyth English Dictionary-Thesaurus [home, info]
  12. slack: Infoplease Dictionary [home, info]
  13. slack: Dictionary.com [home, info]
  14. slack (adj.), slack (n.): Online Etymology Dictionary [home, info]
  15. slack: UltraLingua English Dictionary [home, info]
  16. slack: Cambridge Dictionary of American English [home, info]
  17. slack: Cambridge International Dictionary of Idioms [home, info]
  18. Slack (project management), Slack (river), Slack (software), Slack: Wikipedia, the Free Encyclopedia [home, info]
  19. slack: Cambridge International Dictionary of Phrasal Verbs [home, info]
  20. Slack: Online Plain Text English Dictionary [home, info]
  21. slack: Webster's Revised Unabridged, 1913 Edition [home, info]
  22. slack: Rhymezone [home, info]
  23. slack: AllWords.com Multi-Lingual Dictionary [home, info]
  24. slack: Webster's 1828 Dictionary [home, info]
  25. slack: Free Dictionary [home, info]
  26. slack: Mnemonic Dictionary [home, info]
  27. slack: WordNet 1.7 Vocabulary Helper [home, info]
  28. Slack, slack: LookWAYup Translating Dictionary/Thesaurus [home, info]
  29. slack: Dictionary/thesaurus [home, info]

Art dictionaries Art (3 matching dictionaries)
  1. Slack: Epicurus.com Coffee Glossary [home, info]
  2. SLACK: Shakespeare Glossary [home, info]
  3. SLACK: Bobs Byway OF POETIC TERMS [home, info]

Business dictionaries Business (5 matching dictionaries)
  1. Slack: MoneyGlossary.com [home, info]
  2. Slack: Construction Term Glossary [home, info]
  3. Slack: Wideman Comparative Glossary of Project Management Terms [home, info]
  4. slack: Legal dictionary [home, info]
  5. slack: BusinessDictionary.com [home, info]

Computing dictionaries Computing (2 matching dictionaries)
  1. slack: Free On-line Dictionary of Computing [home, info]
  2. slack: Encyclopedia [home, info]

Medicine dictionaries Medicine (2 matching dictionaries)
  1. slack: online medical dictionary [home, info]
  2. slack: Medical dictionary [home, info]

Miscellaneous dictionaries Miscellaneous (1 matching dictionary)
  1. slack: Idioms [home, info]

Science dictionaries Science (1 matching dictionary)
  1. slack: PlanetMath Encyclopedia [home, info]

Slang dictionaries Slang (1 matching dictionary)
  1. Slack: Urban Dictionary [home, info]

Tech dictionaries Tech (5 matching dictionaries)
  1. Slack: AUTOMOTIVE TERMS [home, info]
  2. Slack: Glossary of Coal Mining Terms [home, info]
  3. SLACK: Glossary of Nautical Terms [home, info]
  4. slack: SeaTalk Dictionary of English Nautical Language [home, info]
  5. Slack: Latitude Mexico [home, info]

(Note: See slacks for more definitions.)

Quick definitions from Macmillan (
American English Definition British English Definition

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Quick definitions from WordNet (slack)

noun:  a cord or rope or cable that is hanging loosely ("He took up the slack")
noun:  the condition of being loose (not taut) ("He hadn't counted on the slackness of the rope")
noun:  a stretch of water without current or movement ("Suddenly they were in slack water")
noun:  dust consisting of a mixture of small coal fragments and coal dust and dirt that sifts out when coal is passed over a sieve
noun:  a noticeable deterioration in performance or quality ("A gradual slack in output")
verb:  cause to heat and crumble by treatment with water ("Slack lime")
verb:  avoid responsibilities and work, be idle
verb:  make less active or fast ("He slackened his pace as he got tired")
verb:  release tension on ("Slack the rope")
verb:  be inattentive to, or neglect ("He slacks his attention")
verb:  make less active or intense
verb:  become less in amount or intensity
verb:  become slow or slower
adjective:  flowing with little speed as e.g. at the turning of the tide ("Slack water")
adjective:  not tense or taut ("Slack and wrinkled skin")
adjective:  lacking in rigor or strictness ("Slack in maintaining discipline")
adjective:  lacking in strength or firmness or resilience ("A slack grip")
name:  A surname (rare: 1 in 25000 families; popularity rank in the U.S.: #3139)

▸ Also see slacks
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Phrases that include slack:   cut some slack, pick up the slack, taking up the slack, picking up the slack, took up the slack, more...

Words similar to slack:   lax, loose, abate, drop-off, falloff, flaccid, limp, slacked, slacken, slacking, slackly, slackness, slake, slow, slump, die away, falling off, let up, remiss, slack off, more...

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