[f. as prec. + -IST.] One who advocates or supports toleration.
1830. W. Taylor, Hist. Surv. Germ. Poetry, I. 472. There lies The prating tolerationist unmaskd.
1899. S. R. Gardiner, Cromwell, 98. A fanatic might have objected that it was unfitting a tolerationist to support the most intolerant clergy in Protestant Europe.