Preachy

Adjective

 * 1) Tending toward excessive moralization.
 * My old fussbudget aunt had a very preachy manner and would prattle on about the dangers of alcohol and other vices.

Thesaurus
admonitory, advisory, cautionary, consultative, consultatory, didactic, directive, exhortative, exhortatory, expostulative, expostulatory, hortative, hortatory, instructive, monitorial, monitory, moral, moralistic, moralizing, recommendatory, remonstrant, remonstrative, remonstratory, sententious, sermonizing, teachy, warning

Synonyms

 * (tending toward excessive moralization): didactic, moralizing, pious, sanctimonious, sermonizing

Antonyms

 * (tending toward excessive moralization): impious, irreverent, tolerant, laissez faire