Definition of popishness in English:

popishness

Pronunciation /ˈpəʊpɪʃnɪs/

noun

  • The quality or condition of being popish, popelike; Roman Catholicism, Roman Catholic doctrine or practice; a tendency towards or sympathy with this.

Origin

Mid 16th century; earliest use found in William Tyndale (c1494–1536), translator of the Bible and religious reformer. From popish + -ness.