having or showing a very abnormal or sick state of mind the movie's villain was a just a clichÃ©d axe-wielding nutcase with a maniacal laugh Synonyms balmy, barmy [chiefly British], bats, batty, bedlam, bonkers, brainsick, bughouse [slang], certifiable, crackbrained, cracked, crackers, crackpot, cranky [dialect], crazed, crazy, cuckoo, daffy, daft, ...
His great empire stretched from central Russia down to the Aral Sea in the west, and from northern China down to Beijing in the east. On August 18, 1227, while putting down a revolt in the kingdom of Xi Xia, Genghis Khan died.
Beginning in 1211 CE, Genghis Khan (given name, Temujin) and his nomadic armies burst from Mongolia and swiftly conquered most of Eurasia. The Great Khan died in 1227, but his sons and grandsons continued the expansion of the Mongol Empire across Central Asia, China, the Middle East, and into Europe.