YOU SAID:
My brother is the most stupid person in the world
INTO JAPANESE
私の兄は世界で最も愚かな人です
BACK INTO ENGLISH
My brother is the most foolish person in the world
INTO JAPANESE
私の兄は世界で最も愚かな人です
BACK INTO ENGLISH
My brother is the most foolish person in the world
Come on, you can do better than that.