zeal ‧ ot /ˈzelət/ BrE AmE noun [countable]
[ Date: 1500-1600 ; Language: Late Latin ; Origin: zelotes , from Greek zelos ; ⇨ ↑ zeal ]
someone who has extremely strong beliefs, especially religious or political beliefs, and is too eager to make other people share them:
religious zealots
—zealotry noun [uncountable]