person possessed by an evil spirit; possession by an evil spirit
Refers to both the state of being possessed and the possessed person. Often used in folklore, horror, or metaphorical contexts.
The villagers avoided him, saying he was possessed by an evil spirit.
The movie depicts a girl possessed by an evil spirit.
Compound of 悪魔 (akuma, 'demon, evil spirit') + 憑き (tsuki, the continuative form of 憑く, 'to possess'). The exact historical derivation is uncertain, but the term follows a common pattern for describing possession.