Meaning & use

thin down

verb·Everyday

Last updated

UK/ˌθɪn ˈdaʊn/
US/ˌθɪn ˈdaʊn/

Meanings

  1. verbtransitive or intransitive

    To make a liquid less thick by adding water or another liquid.

    Grammar: Can be used with an object (thin down the sauce) or without (the sauce will thin down).

    Patterns

    • thin down something
    • thin something down
    • thin down with something

    If the soup is too thick, thin it down with a little stock.

    Thin down the paint with turpentine before you apply it.

    The sauce will thin down as it heats.

  2. verbintransitive

    To become less thick or dense, especially of a crowd or forest.

    Grammar: Used without an object; often followed by 'as' or 'after'.

    Patterns

    • thin down as something happens

    The crowd began to thin down as the rain started.

    The trees thin down near the top of the mountain.

Word forms

third person singularthins down
past tensethinned down
past participlethinned down
-ing formthinning down

Common combinations

thin down with water
Thin down the glue with water if it's too sticky.
thin down the sauce
She thinned down the sauce so it would pour easily.
thin down the paint
You'll need to thin down the paint before using a brush.

Synonyms and how they differ

dilute
Dilute is more formal and often used for chemicals; thin down is everyday and often used in cooking.
water down
Water down means to add water specifically; thin down can use any liquid.

Opposites

thicken

Word family

thin adjective
Having little thickness or density.
thinner noun
A liquid used to make paint thinner.

Commonly confused: thin down or thin out?

thin down vs thin out

Thin out means to remove some plants or items to make a group less crowded; thin down means to make a liquid less thick.

Practice

The gravy is too thick. What should you do?

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