Dictionary and Thesaurus

Definition of Slack

• (n.) Small coal; also, coal dust; culm.
• (n.) A valley, or small, shallow dell.
• (superl.) Lax; not tense; not hard drawn; not firmly extended; as, a slack rope.
• (superl.) Weak; not holding fast; as, a slack hand.
• (superl.) Remiss; backward; not using due diligence or care; not earnest or eager; as, slack in duty or service.
• (superl.) Not violent, rapid, or pressing; slow; moderate; easy; as, business is slack.
• (adv.) Slackly; as, slack dried hops.
• (n.) The part of anything that hangs loose, having no strain upon it; as, the slack of a rope or of a sail.
• (v. t.) Alt. of Slacken
• (a.) Alt. of Slacken

Synonyms of Slack

• Slump
• Drop-Off
• Falloff
• Falling Off
• Slack Water
• Mire
• Quagmire
• Quag
• Morass
• Slackness
• Slacken
• Slack Up
• Relax
• Slow
• Slow Down
• Slow Up
• Slacken
• Slake
• Abate
• Abate
• Let Up
• Slack Off
• Die Away
• Slake
• Loose
• Lax

Antonyms of Slack

Homophones of Slack