For me,” said Pacino, “it was always the opportunity just to be able to explore the whole idea of a zealot.
Clad in black, Al Pacino tells Gina Piccalo he loved playing Jack Kevorkian because he was a "zealot."
None other than Reza Aslan, the author of the nonfiction book zealot, about Jesus of Nazareth.
c.1300, "member of a militant 1st century Jewish sect which fiercely resisted the Romans in Palestine," from Late Latin Zelotes, from Greek zelotes "one who is a zealous follower," from zeloun "to be zealous," from zelos "zeal" (see zeal). Extended sense of "a fanatical enthusiast" first recorded 1630s.