1 rash | Definition of rash

rash

noun
\ ˈrash How to pronounce rash (audio) \

Definition of rash

 (Entry 1 of 3)

1 : an eruption on the body
2 : a large number of instances in a short period a rash of complaints

rash

adjective

Definition of rash (Entry 2 of 3)

1 : marked by or proceeding from undue haste or lack of deliberation or caution a rash promise
2 obsolete : quickly effective

rash

adverb

Definition of rash (Entry 3 of 3)

archaic
: in a rash manner

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Other Words from rash

Adjective

rashly adverb
rashness noun

Choose the Right Synonym for rash

Adjective

adventurous, venturesome, daring, daredevil, rash, reckless, foolhardy mean exposing oneself to danger more than required by good sense. adventurous implies a willingness to accept risks but not necessarily imprudence. adventurous pioneers venturesome implies a jaunty eagerness for perilous undertakings. venturesome stunt pilots daring implies fearlessness in courting danger. daring mountain climbers daredevil stresses ostentation in daring. daredevil motorcyclists rash suggests imprudence and lack of forethought. a rash decision reckless implies heedlessness of probable consequences. a reckless driver foolhardy suggests a recklessness that is inconsistent with good sense. the foolhardy sailor ventured into the storm

Did You Know?

Adjective

The earliest known uses of "rash" (then spelled "rasch") occur in a northern dialect of 15th-century Middle English. Its earlier origins are not known for sure, though it is clearly related to a number of similar words in the Germanic languages, including Old High German rasc ("fast, hurried, strong, clever"), Old Norse "röskr" ("brave, vigorous"), and Middle Dutch "rasch" ("quick, nimble, agile, vigorous"). It is not, however, related to the English noun "rash" ("an eruption on the body," as in a "skin rash"). The noun "rash," which first appeared in English in the 1700s, comes by way of French and Vulgar Latin from Latin rasus, the past participle of "radere" ("to scrape" or "to shave").

Examples of rash in a Sentence

Noun

The baby has a skin rash. The doctor said she developed the rash because of the medicine. I break out in a rash if I eat shellfish. Symptoms of the disease include rash and fever. There has been a rash of robberies in the city this summer.

Adjective

Their rash actions resulted in a serious accident that could have killed someone. Don't be rash about this decision. Take your time. It was rash of you to make that promise.
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Recent Examples on the Web: Noun

Measles is a highly contagious disease that can cause fever, cough, rash, and red, watery eyes. Fox News, "Measles cases in Texas could skyrocket due to unvaccinated children, study finds," 23 Aug. 2019 Syphilis causes rashes and lesions and, if left untreated, can spread to the brain and nervous system and cause blindness, paralysis, and dementia. Stephanie Ebbert, BostonGlobe.com, "Planned Parenthood forgoes federal funding for STD treatment amid record high," 23 Aug. 2019 Swelling, rashes and itching appear 12 hours to two days after contact and blisters can last longer than two weeks. USA TODAY, "Rocket’s last blast, Alaska drought, million-dollar ham: News from around our 50 states," 23 Aug. 2019 Those infected will experience high fever, severe headache, pain behind the eyes, nausea, vomiting, swollen glands, rash, and muscle and joint pains. Dave Quinn, PEOPLE.com, "Former Ski Champion, 36, Dies from Mosquito-Borne Illness While Traveling in Mexico," 21 Aug. 2019 Blonde Soph is rash and hot-tempered with a distinct guffaw that sounds like that of a college frat boy. Matthew Gault, Time, "Wolfenstein: Youngblood Review: Grab a Pal and Fight Some Nazis," 12 Aug. 2019 The antihistamine is used mainly for the treatment of seasonal allergies, bites, stings and rashes and has often proved to cause sedation, according to the DrugBank database. Christina Maxouris And Melissa Alonso, CNN, "A man was sentenced to 60 weekend days in jail for poisoning his wife's coffee," 3 Aug. 2019 Advertising Measles, which can cause fever, rash and red, watery eyes, is highly contagious and spreads quickly through the air after a cough or sneeze. Asia Fields, The Seattle Times, "2 more measles cases in King County, bringing total to 12 in Puget Sound outbreak," 11 July 2019 Wet clothing rubbing against your skin can be a recipe for rash and blister. oregonlive.com, "10 running tips for surviving Portland’s heatwave," 10 June 2019

Recent Examples on the Web: Adjective

And Tower, who gives an emotional, often rash performance as Burr, is the perfect counterpart to Utomi's earnest Hamilton. Kathryn Gregory, The Courier-Journal, "It's not a show, it's a movement. 'Hamilton' wows at Kentucky Center," 6 June 2019 For Pyongyang, the state dispatches must convey frustration while tiptoeing around wording that would signal rash military action or upset Mr. Trump. Timothy W. Martin, WSJ, "North Korea Fires Insults at U.S., Spares Trump," 15 June 2019 Goldman Sachs is urging clients not to take rash action, in part because the consequences of the crackdown will be case-dependent. Matt Egan, CNN, "Antitrust lawsuits against Facebook and others could blow up your portfolio, Goldman Sachs says," 12 June 2019 When Smith was rash enough to commend the architecture of Glasgow, . . Deirdre Mccloskey, WSJ, "‘Adam Smith: Father of Economics’ Review: Obvious, Simple and Wise," 7 Sep. 2018 The stories As trade deadline nears for Marlins, team won't 'do anything rash, nothing emotional,' Michael Hill says The attendance Wednesday night: 5,265 Season average: 9,496 Telling numbers 860. Matthew Defranks, Sun-Sentinel.com, "A Closer Look: Miami Marlins 5, Milwaukee Brewers 4 (12 innings)," 12 July 2018 That sounds rash, but a decision to part with Baker Hughes might indicate even greater desperation—a sign that the power business’s recovery is even farther off or that the insurance business needs more capital. Spencer Jakab, WSJ, "GE Should Hang On to Baker Hughes," 6 June 2018 As the mother got confrontational with police, the father, 54-year-old Gary Davis, initially tried to keep her from doing anything too rash, WBAL reports. Jared Gilmour, miamiherald, "Husband, wife and son tackled, choked and punched cops — and each other, Baltimore police say," 6 June 2018 The summit was the product of Trump’s own misunderstanding and rash decision-making in the first place, and not in any way coordinated with our allies or other key players in East Asia (i.e., China). Jonah Shepp, Daily Intelligencer, "Trump’s Credibility Problem Is Now America’s," 26 May 2018

Recent Examples on the Web: Adverb

Whatever is causing the left-hander to pitch terribly away from home this season, the Giants need to address this road rash sooner rather than later. Andrew Baggarly, The Mercury News, "Matt Moore implodes, Giants crushed 13-5 at Dodger Stadium," 2 May 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rash.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of rash

Noun

1696, in the meaning defined at sense 1

Adjective

1509, in the meaning defined at sense 1

Adverb

15th century, in the meaning defined above

History and Etymology for rash

Noun

probably borrowed from 17th-century French rache, rasche, going back to Middle French raiche "tinea," noun derivative of racher "to chisel, groove (metal)" (probably also "to scrape, scratch," senses attested in Romance cognates), going back to Vulgar Latin *rāsicāre, verb derivative from Latin