conventicler

From conventicle +‎ -er.

conventicler (plural conventiclers)

1. Someone who supports or frequents conventicles.
   • [1682], [John] Dryden, Religio Laici or A Laymans Faith. A Poem, London: […] Jacob Tonson […], →OCLC:

     I fear 'tis unavoidable if the conventiclers be permitted still to scatter. A man may be suffered to quote an adversary to our religion when he speaks truth

• “conventicler”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.