Definition of Bible-thumping in US English:

Bible-thumping

adjective

North American
informal
  • attributive Denoting a person who expounds or follows the teachings of the Bible in an aggressively evangelical way.

    ‘a Bible-thumping evangelical Protestant’

noun

North American
informal
  • The action of expounding or following the teachings of the Bible in an aggressively evangelical way.

    ‘all the Bible-thumping in the world doesn't make one a good Christian’

Pronunciation

Bible-thumping

/ˈbaɪbəlˌθəmpɪŋ//ˈbībəlˌTHəmpiNG/