• synonyms


See more synonyms for rasher on Thesaurus.com
  1. a thin slice of bacon or ham for frying or broiling.
  2. a portion or serving of bacon, usually three or four slices.
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Origin of rasher1

First recorded in 1585–95; origin uncertain


  1. vermilion rockfish.
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Origin of rasher2

1875–80, Americanism; perhaps < Spanish rascacio; see rascasse


adjective, rash·er, rash·est.
  1. acting or tending to act too hastily or without due consideration.
  2. characterized by or showing too great haste or lack of consideration: rash promises.
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Origin of rash1

1350–1400; Middle English; cognate with Dutch, German rasch quick, brisk, Old Norse rǫskr brave
Related formsrash·ly, adverbrash·ness, noun


See more synonyms for rash on Thesaurus.com
1. hasty, impetuous, reckless, venturous, incautious, precipitate, indiscreet, foolhardy.


1. cautious.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for rasher

Historical Examples

  • He was in the middle of his rasher when a shadow fell across his plate.

    Tristram of Blent

    Anthony Hope

  • This is where three eggs and a rasher of ham get cut off in their prime.

    The Girl on the Boat

    Pelham Grenville Wodehouse

  • "Nothing but one rasher of bacon, please," said Henry meekly.

  • Do you think if I had begged him to eat that rasher of ham he would have touched it?

    Jack at Sea

    George Manville Fenn

  • I must make shift with the mutton pie and a rasher of bacon.

    Windsor Castle

    William Harrison Ainsworth

British Dictionary definitions for rasher


  1. a thin slice of bacon or ham
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Word Origin

C16: of unknown origin


  1. acting without due consideration or thought; impetuous
  2. characterized by or resulting from excessive haste or impetuositya rash word
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Derived Formsrashly, adverbrashness, noun

Word Origin

C14: from Old High German rasc hurried, clever; related to Old Norse roskr brave


  1. pathol any skin eruption
  2. a series of unpleasant and unexpected occurrencesa rash of forest fires
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Derived Formsrashlike, adjective

Word Origin

C18: from Old French rasche, from raschier to scratch, from Latin rādere to scrape
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for rasher


"thin slice of bacon or ham," 1590s, of unknown origin. Perhaps from Middle English rash "to cut," variant of rase "to rub, scrape out, erase." However, early lexicographer John Minsheu explained it in 1627 as a piece "rashly or hastily roasted."

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late 14c., "nimble, quick, vigorous" (early 14c. as a surname), a Scottish and northern word, perhaps from Old English -ræsc (cf. ligræsc "flash of lightning") or one of its Germanic cognates, from Proto-Germanic *raskuz (cf. Middle Low German rasch, Middle Dutch rasc "quick, swift," German rasch "quick, fast"). Related to Old English horsc "quick-witted." Sense of "reckless, impetuous, heedless of consequences" is attested from c.1500. Related: Rashly; rashness.

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"eruption of small red spots on skin," 1709, perhaps from French rache "a sore" (Old French rasche "rash, scurf"), from Vulgar Latin *rasicare "to scrape" (also source of Old Provençal rascar, Spanish rascar "to scrape, scratch," Italian raschina "itch"), from Latin rasus "scraped," past participle of radere "to scrape" (see raze). The connecting notion would be of itching. Figurative sense of "any sudden outbreak or proliferation" first recorded 1820.

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Online Etymology Dictionary, © 2010 Douglas Harper

rasher in Medicine


  1. A skin eruption.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.