Arianizing

ppl. a. [f. as prec. + -ING¹.] Professing, favoring or teaching Arianism.

c. 1760[?].  Worthington, Misc., 89 (T.). The downfal of the Arianizing Vandals.

1845.  J. H. Newman, Ess. Develop., 13. The arianizing tone of Eusebius.