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Definition of roil

roil

/rɔɪl/
roil

Plural:roils
•
Adjective:roily
•
Past Simple:roiled
•
Past Participle:roiled
•
Present Participle:roiling
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roil Lexical Profile

roil Game Scores & Validity

• verb

1

To disturb, agitate, or throw into a state of disorder or turmoil.

Example

"Unexpected interest rate hikes continued to roil the global financial markets throughout the week."


2

To make a liquid turbid or muddy by disturbing or stirring up its sediment.

Example

"The heavy runoff from the thunderstorm began to roil the clear mountain stream."


3

To move in a turbulent, swirling, or churning manner (especially of water, clouds, or smoke).

Example

"Dark storm clouds began to roil across the afternoon sky above the prairie."

Synonyms
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Antonyms
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• noun

1

A turbulent, swirling agitation or commotion, especially in water or liquid.

Example

"The kayaker steered carefully around the sudden roil of water near the submerged rocks."

Synonyms
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Word Nuance & Usage

'Roil' is frequently confused with 'rile'; while 'rile' specifically means to annoy or anger someone, 'roil' originally means to make a liquid muddy by stirring up sediment, and by extension to throw a market, crowd, or situation into turmoil.

• Rhymes for roil

Word Origin & Etymology

Dating to the late 16th century, 'roil' is likely borrowed from Old French 'roillier', meaning to roll, muddle, or mix mortar, ultimately tracing back to Vulgar Latin.

Cite this Entry


Wordmom. (2026). Definition of Roil. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/roil
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