v. 1 a intr. deliver a sermon or religious address. b tr. deliver (a sermon); proclaim or expound (the Gospel etc.). 2 intr. give moral advice in an obtrusive way. 3 tr. advocate or inculcate (a quality or practice etc.). preachable adj.
[ ME f. OF prechier f. L praedicare proclaim, in eccl.L preach (as PRAE-, dicare declare) ]