Zealotry in a Sentence 

Definition of Zealotry  

fanatical in the pursuit of an ideal

Examples of Zealotry in a sentence

With how blindly and fervently the enemy soldiers threw themselves at our guns, I could only shake my head at their zealotry.  
The zealotry of the religious fanatics was so intense that they condemned anyone that disagreed with even a single aspect of their beliefs.  
The Crusades were probably the pinnacle of religious zealotry leading to extreme and unwarranted bloodshed.  

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