‘乱扔’ is a compound verb meaning 'to litter' or 'to throw (something) carelessly or haphazardly'. The first character, 乱 (luàn), means 'chaotic', 'disorderly', or 'random', while the second, 扔 (rēng), means 'to throw' or 'to discard'. Together, they emphasize the lack of intention, care, or proper disposal — not just throwing, but doing so without regard for order, location, or consequences. It carries a negative connotation and is commonly used in environmental, civic, or behavioral contexts.

This verb is frequently heard in public announcements, school education, and community campaigns urging people to keep streets and parks clean. It’s often paired with objects like 垃圾 (lājī, 'trash'), 烟头 (yāntóu, 'cigarette butt'), or 废纸 (fèizhǐ, 'waste paper'). Unlike neutral verbs like 丢 (diū, 'to drop/lose') or 放 (fàng, 'to put'), 乱扔 specifically implies irresponsible, inconsiderate action — making it a key term in discussions about social responsibility and public hygiene.