caveman
noun [ C ] uk/ˈkeɪv.mæn/ us/ˈkeɪv.mæn/ -men uk/ˈkeɪv.men/ us/ˈkeɪv.men/
穴居人
someone who lived in a cave in the early stages of the development of human society
informal（尤指对女性）举止粗野的人，野蛮人
a modern man who is very rude or violent towards other people, especially women