n. 25B6; noun
he preached a sermon : HOMILY, address, speech, talk, discourse, oration; lesson.
the headmaster gave them a lengthy sermon : LECTURE, tirade, harangue, diatribe; speech, disquisition, monologue; reprimand, reproach, reproof, admonishment, admonition, reproval, remonstration, criticism; informal telling-off, talking-to, dressing-down, earful; Brit. informal ticking-off, row, rocket, rollicking; formal castigation.