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.
From a military point of view, Genghis Khan's success was due to his reorganisation of the Mongol army into a ruthless, disciplined fighting unit. The Romans and the Chin dynasty were the only other ancient states to achieve a similar level of discipline. Cowardice by one was punished by the death of the entire 10 men unit the armies were split into.