opponent; rival; adversary; menace; danger; threat
country in civil war; country disarrayed by war; Warring States period (Japan, China); competiton in which there are several evenly-matched participants; hotly-contested game (match, market, etc.)
scariest; most frightening
ogre; demon; spirit of a deceased person; ogre-like person (i.e. fierce, relentless, merciless, etc.); it (in a game of tag, hide-and-seek, etc.); Chinese "ghost" constellation (one of the 28 mansions); very
paraselene; moon dog; moondog (bright spot on either side of the Moon caused by refraction of moonlight through ice crystals in the atmosphere)