zealisthttp://www.oed.com/dictionary/zealist_n%3Ftab%3Dmeaning_and_usezealist, n.
Revised 2018

zealistnoun

rare after 17th cent.
  1. 1614–
    A zealot.
    Stressed as ˈzealist.
    1. 1614
      Proue not a Zelist in fond Purity, Nor paint a Heauen, nor counterfeit a Hell.
      C. Brooke, Ghost of Richard III ii. lxxiv. sig. G2v
    2. 1638
      The Meccan zealists have here a few poore built Mosques.
      T. Herbert, Some Yeares Travels (revised edition) 27
    3. a1657
      His little Tutor, who like a second Protaeus could ingeniously disguise himself into the most safe shape; sometimes one of Goodwins Disciples, then a Presbyterian Zealist.
      C. Croke, Fortune's Uncertainty (1667) 16
    4. 1939
      He throws himself into his hobby with the intensity of a zealist to escape for the moment the awful feeling of responsibility.
      Syracuse (New York) Journal 20 March l. 24/2

Originally published as part of the entry for zeal, n.

zeal, n. was revised in June 2018.