denounce_effect

denounce_effect = {
	add_trait = denounced
	if = {
		limit = {
			NOT = {
				has_relation_rival = $ACTOR$
			}
		}
		#Rivalry
		set_relation_rival = {
			target = $ACTOR$
			reason = rival_denounced
		}
	}
	if = {
		limit = {
			$ACTOR$ = {
				has_hook_of_type = {
					target = $RECIPIENT$
					type = house_head_hook
				}
			}
		}
		$ACTOR$ = {
			remove_hook = {
				target = $RECIPIENT$
				type = house_head_hook
			}
		}
	}
	if = {
		limit = {
			has_opinion_modifier = {
				target = $ACTOR$
				modifier = forgave_denounced_opinion
			}
		}
		custom_tooltip = forgiven_changed_to_denounced
		hidden_effect = {
			remove_opinion = {
				target = $ACTOR$
				modifier = forgave_denounced_opinion
			}
			add_opinion = {
				modifier = denounced_opinion
				target = $ACTOR$
			}
		}
	}
	else = {
		add_opinion = {
			modifier = denounced_opinion
			target = $ACTOR$
		}
	}
	if = {
		limit = {
			NOT = { is_close_family_of = $ACTOR$ }
		}
		house = {
			every_house_member = {
				limit = {
					NOT = { house = $ACTOR$.house }
				}
				custom = all_house_members
				add_opinion = {
					modifier = denounced_house_member_opinion
					target = $ACTOR$
				}
			}
		}
	}
}

As written in game/common/scripted_effects/00_interaction_effects.txt.