Simple Definition of thicken
: to make (something) thick or thicker or to become thick or thicker
Full Definition of thicken
thick·enedthick·en·ing play \ˈthik-niŋ, ˈthi-kə-\
1a : 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>
1a : 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>
Examples of thicken
I thickened the gravy with flour.
When the mixture thickens, add the remaining ingredients.
The fog thickened when night fell.
First Known Use of thicken
THICKEN Defined for Kids
Definition of thicken
: to make or become thick <Wait for the pudding to thicken.>
Seen and Heard
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