| coarsen | (verb) make less subtle or refined | - |
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| (verb) make or become coarse or coarser | - |
| lessen | (verb) decrease in size, extent, or range | Synonyms: decrease, diminish, fall |
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| (verb) wear off or die down | Synonyms: subside |
| (verb) make become smaller | Synonyms: decrease, minify |
| loosen | (verb) become loose or looser or less tight | Synonyms: loose, relax |
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| (verb) make loose or looser | Synonyms: loose |
| (verb) make less dense | - |
| (verb) disentangle and raise the fibers of | Synonyms: tease, tease apart |
| (verb) cause to become loose | Synonyms: undo, untie |
| (verb) become less severe or strict | Synonyms: relax |
| (verb) make less severe or strict | Synonyms: relax |
| unloosen | (verb) loosen the ties of | Synonyms: unloose |
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| (verb) grant freedom to; free from confinement | Synonyms: free, liberate, loose, release, unloose |
| worsen | (verb) grow worse | Synonyms: decline |
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| (verb) make worse | Synonyms: aggravate, exacerbate, exasperate |