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thin - definition and synonyms


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verb     thin pronunciation in British English
Word Forms
present tense
present participlethinning
past tensethinned
past participlethinned
  1. 1



    thin down

    [transitive] to make something smaller in number, amount, or size

    Sales have decreased and we’ve decided to thin our workforce.

    Police thinned down the crowd.

    1. a.
      [intransitive] to become smaller in number, amount, or size
  2. 2



    thin out

    [transitive] to remove plants, leaves, trees etc so that they do not fill an area or space completely
    Synonyms and related words
  3. 3
    [intransitive] if someone’s hair thins, they gradually lose the hair from their head

    a man with grey thinning hair

  4. 4
    [transitive] to make a thick liquid become less thick by adding water or another liquid to it
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liquid biopsy

a medical test in which blood cells are taken from the body and examined to find out if they are healthy

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someone on a film set who takes care of plants, trees, and other various landscaping materials like rocks, gravel, sand, etc.

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