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adj B2 Upper-Intermediate Uncommon

rash

rash

Rash (adj) means acting too quickly without thinking through the consequences. Example: “Quitting your job without a backup plan was a rash decision.”

adj
1
Acting too quickly without thinking through the consequences.
"Quitting your job without a backup plan was a rash decision."
"Don't make any rash promises you can't keep."
noun
1
An area of irritated, reddened skin, sometimes with bumps or blisters.
"The soap gave her a rash on her arms."
"The doctor prescribed cream for the rash."
2
A sudden series of similar events, usually unwelcome ones.
"There's been a rash of burglaries in the neighborhood."

How to use rash

Learner’s notes

In plain EnglishHasty and unthinking, a skin irritation, or a sudden burst of similar events.

Common pairings
a rash decision a rash of complaints break out in a rash skin rash

Word forms

rasher comparative, more rash comparative, rashed past tense, rashed past tense, rashed past tense, rashes plural, rashes plural, rashes singular, rashes singular, rashes singular, rashest superlative, most rash superlative

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Test yourself on “rash” A quick quiz — meaning, synonyms & usage

Fill the gap

Can you complete this real example?

Quitting your job without a backup plan was a _____ decision.

Etymology

Possibly from Old English *ræsc, related to words meaning "to move quickly or flash" — connected to the idea of acting suddenly.

Origin: Old English

Related words

Rhymes for rash

See all rhymes for rash →

Frequently asked questions

What does “rash” mean?

The word “rash” means acting too quickly without thinking through the consequences. In plain terms, hasty and unthinking, a skin irritation, or a sudden burst of similar events.

How do you pronounce “rash”?

“Rash” is pronounced rash (/ɹæʃ/ in IPA).

How do you use “rash” in a sentence?

Here is “rash” used in a sentence: “Quitting your job without a backup plan was a rash decision.”

What part of speech is “rash”?

Depending on how it is used, “rash” can be an adjective and a noun.

Where does the word “rash” come from?

The word “rash” comes from Old English. Possibly from Old English *ræsc, related to words meaning "to move quickly or flash" — connected to the idea of acting suddenly.

Is “rash” a common word?

“Rash” is an uncommon word in modern English, usually learned at around the B2 level.

How many meanings does “rash” have?

“Rash” has 3 distinct senses listed in this dictionary. The most common is: acting too quickly without thinking through the consequences.

What is the difference between rash and reckless?

Rash describes acting too quickly without thinking through the consequences, often referring to a single hasty decision. Reckless implies a broader disregard for danger across a pattern of behavior rather than one impulsive moment.

What is the difference between a skin rash and a rash of events?

A skin rash is an area of irritated, reddened skin, sometimes with bumps or blisters, caused by irritation, allergy, or illness. A "rash of events" is a figurative use describing a sudden series of similar, usually unwelcome occurrences, unrelated to skin.

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