prefix ogro (o algún ente de gran maldad);demonio

noun (common) (futsuumeishi) ogre;demon;oni

noun (common) (futsuumeishi) spirit of a deceased person

noun (common) (futsuumeishi) only applies to おに ogre-like person (i.e. fierce, relentless, merciless, etc.)

noun (common) (futsuumeishi) only applies to おに it (in a game of tag, hide-and-seek, etc.);seeker;chaser;tagger;tigger

noun (common) (futsuumeishi) astronomy only applies to き Chinese "ghost" constellation (one of the 28 mansions)

prefix slang only applies to おに very;extremely;super-