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.
Genghis Khan (1162-1227) was the first and greatest of the Mongol khans. He believed that it was heaven's will and his destiny to unite the world by force. Forging an army from a group of unruly Mongol tribes, he almost single-handedly created an empire that spanned half of the known world.