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Definition of fluke

fluke

/fluːk/
fluke

Adverb:flukily
•
Plural:flukes
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Adjective:fluky
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Past Simple:fluked
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Past Participle:fluked
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Present Participle:fluking
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fluke Lexical Profile

fluke Game Scores & Validity

• noun

1

A surprising piece of luck or a chance occurrence, typically resulting in a positive outcome.

Example

"Winning the championship in their first year was dismissed by critics as a mere fluke."


2

The broadly flattened extremity of an anchor arm, or one of the two horizontal lobes of a cetacean's tail.

Example

"As the massive humpback whale dove into the depths, its powerful flukes breached the ocean surface."


3

A parasitic flatworm of the class Trematoda, typically having suckers and commonly infecting the liver, blood, or lungs of mammals.

Example

"The sheep contracted a serious infection after grazing in pastures contaminated with liver flukes."

Synonyms
View all synonyms for fluke
Antonyms
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• verb

1

To achieve a fortunate result or goal entirely by chance rather than by skill.

Example

"He managed to fluke his way through the difficult entrance exam without studying at all."

• Rhymes for fluke

Word Origin & Etymology

The word has multiple distinct origins. The sense meaning a 'stroke of luck' originated in the mid-19th century as a billiards term. The senses referring to a flatworm, anchor part, or whale's tail derive from the Old English 'flōc' (meaning flatfish), tracing back to a Proto-Germanic root meaning 'flat'.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Fluke. In Wordmom Dictionary. Retrieved Oct 16, 2026, from https://wordmom.com/dictionary/fluke
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