Definition of unprotestantize in English:

unprotestantize

verb

historical
  • with object To cause to be no longer Protestant; to divest of Protestant characteristics.

Origin

Mid 19th century; earliest use found in R. Hurrell Froude (1803–1836), Church of England clergyman. From un- + Protestantize.

Pronunciation

unprotestantize

/(ˌ)ʌnˈprɒtɪst(ə)ntʌɪz/