teachy

Etymology 1
From, q.v..

Adjective

 * 1) Preachy, didactic, tending toward excessive moraling or personal instruction.

Synonyms

 * preachy, didactic, moralizing, pious, sanctimonious, sermonizing

Antonyms

 * impious, irreverent, tolerant, laissez faire

Etymology 2
Variant of, of uncertain etymology.