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Definition of overturn

overturn

/ˌoʊ.vɚˈtɝːn/
o · ver · turn

Plural:overturns
•
Past Simple:overturned
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Past Participle:overturned
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Present Participle:overturning
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overturn Lexical Profile

overturn Game Scores & Validity

• verb

1

To abolish, invalidate, or reverse (an official decision, law, legal ruling, or established system).

Example

"The appellate court voted unanimously to overturn the original conviction."


2

To tip over, flip, or cause something to turn upside down or fall onto its side.

Example

"Fierce gusts of wind threatened to overturn the small sailboat."


3

To overthrow, defeat, or bring down (a government, ruler, or established institution).

Example

"The reform movement sought to overturn the entrenched political hierarchy."

Synonyms
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Antonyms
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• noun

1

The act of upsetting, reversing, or overthrowing something, or the state of being overturned.

Example

"The sudden overturn of the lower court's verdict surprised many legal analysts."


2

The seasonal vertical mixing and circulation of water in a lake or ocean caused by temperature and density changes between surface and deep layers.

Example

"During the autumn overturn, oxygen-rich surface water mixes down to the bottom of the lake."

Synonyms
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Antonyms
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• Rhymes for overturn

Word Origin & Etymology

Formed in Middle English around the 13th century by combining the prefix over- with the verb turn, replacing the earlier Old English form oferhwierfan.

Cite this Entry


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