説教坊主

せっきょうぼうず

noun

•

tub-thumping preacher, preacher (priest) who is good at delivering a sermon, pulpiteer (usually with contemptuous implication)(yojijukugo)

説	opinion, theory, explanation, rumor
教	teach, faith, doctrine
坊	boy, priest's residence, priest
主	lord, chief, master, main thing, principal