YOU SAID:
you are the most horrible person on this world
INTO JAPANESE
あなたはこの世界で最も恐ろしい人です
BACK INTO ENGLISH
You are the most scary person in this world
INTO JAPANESE
あなたはこの世で最も怖い人です
BACK INTO ENGLISH
You are the scariest person in the world
INTO JAPANESE
あなたは世界で最も怖い人です
BACK INTO ENGLISH
You are the most scared person in the world
INTO JAPANESE
あなたは世界で最も怖い人です
BACK INTO ENGLISH
You are the most scared person in the world
That didn't even make that much sense in English.