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Definition of flashflood

flashflood

/ˈflæʃˌflʌd/
flash · flood
Plural:flashfloods
•
Past Simple:flashflooded
•
Past Participle:flashflooded
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Present Participle:flashflooding
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flashflood Lexical Profile

flashflood Game Scores & Validity

• noun

1

A sudden, severe local flood of great volume and short duration, typically caused by heavy or excessive rainfall in a brief period, a dam failure, or rapid snowmelt.

Example

"Hikers were warned to stay out of the narrow slot canyons because an afternoon thunderstorm could trigger a dangerous flashflood."

Synonyms
View all synonyms for flashflood
Antonyms
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• verb

1

To inundate an area with a sudden, rapid surge of floodwater, or to experience such a flood.

Example

"The dry creek bed can flashflood within minutes after a heavy summer downpour in the mountains."

Synonyms
View all synonyms for flashflood

Word Nuance & Usage

Most commonly written as two separate words ('flash flood') or hyphenated ('flash-flood'), though the closed compound 'flashflood' appears occasionally in meteorological and journalistic contexts.

• Nearby Words

flashbulb
flashcard
flasher
flashflood
flashforward
flashgun
flashily

Cite this Entry

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