Use 'preachy' sparingly to describe excessive moral advice, to maintain its strong impact. The character's dialogue started feeling preachy after her third rant about justice.
Pro Tip 2/3
Negative Nuance
'Preachy' often implies disapproval; use it to express annoyance at being lectured. His well-meaning health tips came across as preachy.
Pro Tip 3/3
Emotional Context
Using 'preachy' signals emotional irritation towards self-righteous or patronizing tones. Her preachy tone made the audience tune out.