粗暴 (cūbào) describes behavior or treatment that is harsh, violent, and lacking gentleness — it implies physical force or angry outbursts. It is stronger than 粗鲁 (cūlǔ, rude/impolite in manner) and less extreme than 残酷 (cánkù, cruel in a merciless, tragic way). Its focus is on brutal roughness, not just bad manners or coarse texture.