3. Hence, a serious address; a lecture on one's conduct or duty; an exhortation or reproof; a homily; — often in a depreciatory sense.

SERMON
Ser"mon, v. i. Etym: [Cf. OF. sermoner, F. sermonner to lecture one.]

Defn: To speak; to discourse; to compose or deliver a sermon. [Obs.]
Holinshed.
What needeth it to sermon of it more Chaucer.

SERMON
Ser"mon, v. t.

1. To discourse to or of, as in a sermon. [Obs.] Spenser.

2. To tutor; to lecture. [Poetic] Shak.

SERMONEER
Ser`mon*eer", n.

Defn: A sermonizer. B. Jonson.

SERMONER
Ser"mon*er, n.

Defn: A preacher; a sermonizer. [Derogative or Jocose.] Thackeray.