moralizing

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

noun

The behaviour of one who moralizes.