鬼

おに · き

1. noun ogre; demon; oni
2. spirit of a deceased person
3. ogre-like person (i.e. fierce, relentless, merciless, etc.)
4. it (in a game of tag, hide-and-seek, etc.); seeker; chaser; tagger; tigger
5. astronomy Chinese "ghost" constellation (one of the 28 mansions)
6. prefix, slang very; extremely; super-

しこ also 醜

1. prefix, derogatory, rare ugly; repulsive; detestable; contemptible
2. rare, in self-reference; oft. as しこの unworthy; insignificant; humble
3. noun, archaic strong and frightening thing