乱暴
らんぼう · ranbou · JLPT N2 · noun
violent
乱 (disorder) + 暴 (violence) = disorderly, violent conduct: rough and rude
乱 means chaos or disorder, and 暴 means violence or outbreak. Together they describe rough, unruly behavior toward others, whether rude words or physical force.
乱 — hand 又 + tangled silk 𠬪/乿 component
乱 is the simplified form of 亂. The traditional character depicts hands above and below untangling silk threads on a frame, with 乙 on the right. It originally meant 'to put tangled threads in order,' but came to mean both 'disorder' and 'to govern chaos.'