loosen
Americanverb (used with object)
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to unfasten or undo, as a bond or fetter.
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to make less tight; slacken or relax.
to loosen one's grasp.
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to make less firmly fixed in place.
to loosen a tooth.
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to let loose or set free from bonds, restraint, or constraint.
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to make less close or compact in structure or arrangement.
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to make less dense or coherent.
to loosen the soil in a garden.
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to relax in strictness or severity, as restraint or discipline.
to loosen restrictions on trade.
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to relieve (the bowels) of their constipated condition.
verb (used without object)
verb
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to make or become less tight, fixed, etc
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(often foll by up) to make or become less firm, compact, or rigid
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(tr) to untie
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(tr) to let loose; set free
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(often foll by up) to make or become less strict, severe, etc
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(tr) to rid or relieve (the bowels) of constipation
Other Word Forms
Etymology
Origin of loosen
First recorded in 1350–1400, loosen is from the Middle English word loosnen. See loose, -en 1
Explanation
When you loosen something, you make it less tight. A ballerina, for example, might loosen her tightly coiled hair after dance practice. You might need to loosen your belt after eating a huge meal, or loosen your collar and tie after a long day at work. Things sometimes also loosen on their own, like when a dog's collar loosens gradually until she can slip right out of it to chase a squirrel. There is also a figurative way to loosen things, making them less strict, like when a community loosens certain rules or laws.
Vocabulary lists containing loosen
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The administration also intends to loosen regulations for U.S. cattlemen and direct the Small Business Administration to increase loans and access to capital for ranchers.
From The Wall Street Journal • May 11, 2026
Add a little water to loosen it if needed.
From Salon • May 5, 2026
That bill, if enacted into law, would give the city the ability to loosen development restrictions on the stadium property for a team owner willing to call the team the Anaheim Angels.
From Los Angeles Times • Apr. 17, 2026
Hims & Hers Health jumps after regulators pledge to loosen regulations on 12 peptides.
From Barron's • Apr. 16, 2026
Malcolm’s stiff arms and shoulders began to loosen, and the canoe made good speed on the dark water.
From "The Book of Dust: La Belle Sauvage" by Philip Pullman
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
