幻げん怪かい

na-adjective, noun

strange and troubling; mysterious and unsettling

Describes something eerie, uncanny, or mysteriously disturbing. Rare literary word; not used in everyday speech.

• その古ふるい屋や敷しきには幻げん怪かいな雰ふん囲い気きが漂ただよっていた。

  A strange and unsettling atmosphere hung over that old mansion.