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heroism

[her-oh-iz-uh m]
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noun
  1. the qualities or attributes of a hero or heroine: He showed great heroism in battle.
  2. heroic conduct; courageous action: Pat's returning into the burning building was true heroism.
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Origin of heroism

1660–70; hero + -ism; compare French héroïsme

Synonyms

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1. intrepidity, valor, prowess, gallantry, bravery, courage, daring, fortitude.

Antonyms

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

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British Dictionary definitions for heroism

heroism

noun
  1. the state or quality of being a hero
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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 heroism

n.

1717, from French héroisme, from heros (see hero (n.1)).

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Online Etymology Dictionary, © 2010 Douglas Harper