1. happy-clappy - Noun
2. happy-clappy - Adjective
happy-clappy (plural happy-clappies)
(slang, derogatory) A member of a Christian church whose worship is characterized by enthusiasm and spontaneity.
happy-clappy (comparative more happy-clappy, superlative most happy-clappy)
(slang, derogatory) Of or relating to such a worshiper or such a church.