crusade
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/kruːˈseɪd/
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/kruːˈseɪd/
A strong, serious effort to change something or achieve a goal that is important to you.
She started a crusade to clean up the polluted river.
A series of wars in the past where European Christians fought against Muslims for control of holy places.
The knights joined the crusade to reclaim the Holy Land.
To work very hard to achieve something important or to stop something you think is wrong.
The politician crusaded for better education in schools.