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Definitions for Slack

[1] not tight, taut, firm, or tense; loose: a slack rope.
[2] negligent; careless; remiss: slack proofreading.
[3] slow, sluggish, or indolent: He is slack in answering letters.
[4] not active or busy; dull; not brisk: the slack season in an industry.
[5] moving very slowly, as the tide, wind, or water.
[6] weak; lax.
[7] Nautical . easy(def 15a) .
[8] in a slack manner.
[9] a slack condition or part.
[10] the part of a rope, sail, or the like, that hangs loose, without strain upon it.
[11] a decrease in activity, as in business or work: a sudden slack in output.
[12] a period of decreased activity.
[13] Geography . a cessation in a strong flow, as of a current at its turn.
[14] a depression between hills, in a hillside, or in the land surface.
[15] Prosody . (in sprung rhythm) the unaccented syllable or syllables.
[16] British Dialect . a morass; marshy ground; a hollow or dell with soft, wet ground at the bottom.
[17] to be remiss in respect to (some matter, duty, right, etc.); shirk; leave undone: He slacked the most important part.
[18] to make or allow to become less active, vigorous, intense, etc.; relax (efforts, labor, speed, etc.); lessen; moderate (often followed by up ).
[19] to make loose, or less tense or taut, as a rope; loosen (often followed by off or out ).
[20] to slake (lime).
[21] to be remiss; shirk one's duty or part.
[22] to become less active, vigorous, rapid, etc. (often followed by up ): Business is slacking up.
[23] to become less tense or taut, as a rope; to ease off.
[24] to become slaked, as lime.
[25] take up the slack , to pull in or make taut a loose section of a rope, line, wire, etc.: Take up the slack before releasing the kite. to provide or compensate for something that is missing or incomplete: New sources of oil will take up the slack resulting from the embargo.
[26] the fine screenings of coal.
[27] not tight, tense, or taut
[28] negligent or careless
[29] (esp of water, etc) moving slowly
[30] (of trade, etc) not busy
[31] phonetics another term for lax (def. 4)
[32] in a slack manner
[33] a part of a rope, etc, that is slack take in the slack
[34] a period of decreased activity
[35] a patch of water without current a slackening of a current
[36] prosody (in sprung rhythm) the unstressed syllable or syllables
[37] to neglect (one's duty, etc)
[38] (often foll by off) to loosen; to make slack
[39] chem a less common word for slake (def. 3)
[40] small pieces of coal with a high ash content

Words related to Slack

lax, sloppy, sluggish, feeble, leisurely, permissive, lackadaisical, stagnant, lethargic, slow, relaxed, quiet, passive, laggard, flimsy, limp, dull, delinquent, idle, derelict

Words nearby Slack

slab top, slab track, slab-sided, slabber, slabbery, slack, slack off, slack suit, slack water, slack-baked, slack-jawed

Origin of Slack

21400–50; late Middle English sleck < Middle Dutch slacke, slecke

Other words from Slack

slack·ing·ly , adverb
slack·ly , adverb
slack·ness , noun
un·slacked , adjective
un·slack·ing , adjective

Word origin for Slack

C15: probably from Middle Low German slecke; related to Dutch slak, German Schlacke dross

Synonyms for Slack

feeble, lax, leisurely, sloppy, sluggish, dull, flimsy, laggard, limp, passive, quiet, relaxed, slow, easy, flabby, flaccid, flexible, inert, infirm, not taut, quaggy, slow-moving, soft, supine, unsteady, weak