Search the dictionary A Chinese word or character, or English Draw a character Search 2 entries. xiūxīdǐdé 修昔底德 Thucydides (c. 455–c. 400 BC), Greek historian and author of History of the Peloponnesian War xiūxīdǐdéxiànjǐng 修昔底德陷阱 Thucydides Trap (theory that war may result when a rising power threatens to displace an established power)