thicken

To thicken is to become denser or to make something thicker. When you accidentally burn dinner, the smoke in the kitchen thickens. Time to get the fire extinguisher.

There are two ways to thicken: to become thick or to make thick. Cooks often use flour or cornstarch to thicken sauces. And when you add flour to your brownie batter, you thicken it. An earlier, now obsolete meaning was "to crowd together." The phrase "the plot thickens" means that a situation is becoming more and more complicated or interesting.

Definitions of thicken
1

v make thick or thicker

Thicken the sauce”
Synonyms:
inspissate
inspissate
become thick or thicker
Antonyms:
thin
make thin or thinner
Type of:
alter, change, modify
cause to change; make different; cause a transformation

v make viscous or dense

thicken the sauce by adding flour”
Synonyms:
inspissate
Type of:
change integrity
change in physical make-up

v become thick or thicker

“The sauce thickened
Synonyms:
inspissate
inspissate
make thick or thicker
Antonyms:
thin
lose thickness; become thin or thinner
Type of:
change state, turn
undergo a transformation or a change of position or action

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