鲁钝 Traditional form: 魯鈍 Pinyin (reading): lǔdùn Definitions: stupid slow on the uptake Characters: 鲁 - foolish, stupid, rash; vulgar 钝 - blunt, obtuse; dull, flat; dim-witted Traditional characters: 魯 - foolish, stupid, rash; vulgar 鈍 - blunt, obtuse; dull, flat; dim-witted