thicken

verb

thick·​en ˈthi-kən How to pronounce thicken (audio)
thickened; thickening ˈthi-kə-niŋ How to pronounce thicken (audio)
ˈthik-

intransitive verb

1
a
: to become dense
the mist thickened
b
: to become concentrated in numbers, mass, or frequency
2
: to grow blurred or obscure
3
: to grow broader or bulkier
4
: to grow complicated or keen
the plot thickens

transitive verb

1
a
: to make thick, dense, or viscous in consistency
thicken gravy with flour
b
: to make close or compact
2
: to increase the depth or diameter of
3
: to make inarticulate : blur
alcohol thickened his speech
thickener noun

Examples of thicken in a Sentence

I thickened the gravy with flour. When the mixture thickens, add the remaining ingredients. The fog thickened when night fell.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
When printing textiles, gum arabic played the indispensable role of a thickening agent that helped bind dyes on fabric. Erik Zou, JSTOR Daily, 25 Apr. 2025 Evangelista later revealed that she had been diagnosed with Paradoxical adipose hyperplasia (PAH), a rare side effect that affects less than 1% of CoolSculpting patients, in which the freezing process causes the affected fatty tissue to thicken and expand. Lauryn Overhultz, FOXNews.com, 24 Apr. 2025 But amid a rapidly thickening cast of characters and a wide variety of different perks to build out your stat sheets, Dead by Daylight almost resembles something like League of Legends in terms of competitive complexity. Luke Winkie, Vulture, 1 Apr. 2025 Chia seeds can also be used to thicken sauces or as a binding agent instead of eggs for a vegan version of a favorite recipe. Sarah Scott, Verywell Health, 31 Mar. 2025 See All Example Sentences for thicken

Word History

First Known Use

14th century, in the meaning defined at intransitive sense 1a

Time Traveler
The first known use of thicken was in the 14th century

Browse Nearby Words

Cite this Entry

“Thicken.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thicken. Accessed 1 May. 2025.

Kids Definition

thicken

verb
thick·​en ˈthik-ən How to pronounce thicken (audio)
thickened; thickening -(ə-)niŋ How to pronounce thicken (audio)
1
: to make or become thick, dense, or viscous
thicken gravy with flour
2
: to become complicated
the plot thickens
thickener noun

More from Merriam-Webster on thicken

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!