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crusade

American  
[kroo-seyd] / kruˈseɪd /

noun

  1. Often Crusade any of the military expeditions undertaken by the Christians of Europe in the 11th, 12th, and 13th centuries for the recovery of the Holy Land from the Muslims.

  2. any war carried on under papal sanction.

  3. any vigorous, aggressive movement for the defense or advancement of an idea, cause, etc..

    a crusade against child abuse.


verb (used without object)

crusaded, crusading
  1. to go on or engage in a crusade.

crusade British  
/ kruːˈseɪd /

noun

  1. (often capital) any of the military expeditions undertaken in the 11th, 12th, and 13th centuries by the Christian powers of Europe to recapture the Holy Land from the Muslims

  2. (formerly) any holy war undertaken on behalf of a religious cause

  3. a vigorous and dedicated action or movement in favour of a cause

"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

verb

  1. to campaign vigorously for something

  2. to go on a crusade

"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

Etymology

Origin of crusade

First recorded in 1570–80; earlier crusada, from Spanish cruzada; replacing croisade, from Middle French. See cross, -ade 1

Explanation

If you go on a crusade against vegetables, you are waging a long-term battle against leafy greens. A crusade is a passionate struggle against something or someone. In the 11th through 13th centuries, Roman Catholics attempting to win control of parts of what they considered the Holy Land (currently Israeli, Jordanian, Lebanese, and Palestinian lands) waged military battles against the Muslims who controlled the land. These battles are called the Crusades. The word crusade carries with it the feeling of a violent and vigorous fight. So if someone is on a crusade to do something, they mean business!

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Vocabulary lists containing crusade

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.

The unlikely vehicle is not some glamorous investigative exposé or Pulitzer-winning newsroom crusade.

From Salon • May 13, 2026

Baum has been posting about her crusade, and amassing fans.

From The Wall Street Journal • Mar. 10, 2026

Meanwhile, the crusade against Captain Kelly seems doomed to a proper flameout.

From Slate • Jan. 13, 2026

The movie’s moxie makes it impossible not to get caught up in Marty’s crusade.

From Los Angeles Times • Dec. 23, 2025

The Andrews case became the basis for a legal and medical crusade.

From "In Cold Blood" by Truman Capote

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