moralize

Short definition from Wiktionary

Verb

1. 1
   To make moral reflections (on, upon, about or over something); to regard acts and events as involving a moral.
2. 2
   To say (something) expressing a moral reflection or judgment.
3. 3
   To render moral; to correct the morals of; to give the appearance of morality to.
4. 4
   To give a moral quality to; to affect the moral quality of, either for better or worse.
5. 5
   To apply to a moral purpose; to explain in a moral sense; to draw a moral from.
6. 6
   To supply with moral lessons, teachings, or examples; to lend a moral to.