Synonyms of sermonic

2 Syllables
preaching, teaching, teachy
3 Syllables
edifying, teacherish, teacherly, didactic, doctrinal
4 Syllables
instructional, hortative, moralizing, instructive, homiletic, schoolmasterist, preceptive, sermonizing
5 Syllables
expository, disciplinary, exhortative, disquisitional, admonitory