1
as in loosens
to make less taut
you'll need to slacken the rope a bit to get it free of that post
Synonyms & Similar Words
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Antonyms & Near Antonyms
2
as in slows
to cause to move or proceed at a less rapid pace
drivers need to slacken their speed as they approach the sharp curve
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
Recent Examples of Synonyms for slackens
Verb
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Instead of stimulating the brain, alcohol slows it down and loosens inhibitions.—
Angelica Stabile,
FOXNews.com,
10 Jan. 2026 -
If TNF‑α loosens the blood-brain barrier, inflammatory molecules from the blood – as well as disease-causing pathogens – may have increased access to the reward circuitry of the brain, potentially worsening neuronal damage and dysfunction over time.—
Habibeh Khoshbouei,
The Conversation,
9 Jan. 2026
Verb
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Oats also contain soluble fiber, which slows digestion and helps keep blood sugar levels steady.—
Brianna Tobritzhofer,
Health,
7 Jan. 2026
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Stop fertilizing during winter, when the plant's growth slows.—
SJ McShane,
Martha Stewart,
7 Jan. 2026
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Cite this Entry
“Slackens.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/slackens. Accessed 18 Jan. 2026.
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