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tarnish

American  
[tahr-nish] / ˈtɑr nɪʃ /

verb (used with object)

  1. to dull the luster of (a metallic surface), especially by oxidation; discolor.

    Antonyms:
    brighten
  2. to diminish or destroy the purity of; stain; sully.

    The scandal tarnished his reputation.

    Synonyms:
    soil, blemish, taint

verb (used without object)

  1. to grow dull or discolored; lose luster.

  2. to become sullied.

noun

  1. a tarnished coating.

  2. tarnished condition; discoloration; alteration of the luster of a metal.

  3. a stain or blemish.

tarnish British  
/ ˈtɑːnɪʃ /

verb

  1. to lose or cause to lose the shine, esp by exposure to air or moisture resulting in surface oxidation; discolour

    silver tarnishes quickly

  2. to stain or become stained; taint or spoil

    a fraud that tarnished his reputation

"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

noun

  1. a tarnished condition, surface, or film

"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

Other Word Forms

  • antitarnish adjective
  • antitarnishing adjective
  • nontarnishable adjective
  • nontarnished adjective
  • nontarnishing adjective
  • tarnishable adjective
  • tarnisher noun
  • untarnishable adjective
  • untarnished adjective
  • untarnishing adjective

Etymology

Origin of tarnish

1590–1600; < Middle French terniss-, long stem of ternir to dull, deaden, derivative of terne dull, wan < Germanic; compare Old High German tarni, cognate with Old Saxon derni, Old English dierne hidden, obscure; -ish 2

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Wealthier silver sellers have another tarnish, because they could be paying more in taxes.

From MarketWatch

Wealthier silver sellers have another tarnish, because they could be paying more in taxes.

From MarketWatch

However, Emanuel does expect increased market volatility in 2026, and he recognizes that concerns about systemic AI risk has tarnished the tech sector somewhat of late.

From MarketWatch

“Its reputation is not tarnished because it’s being held by the military.”

From The Wall Street Journal

"It's organised by the military, we can't let our name be tarnished."

From Barron's