taru-adjective, adverb taking the 'to' particle
spine-chilling; hair-raising
Literary yojijukugo describing an eerie, ghostly atmosphere, as if hearing the wailing of restless spirits. Used in formal or poetic contexts.
夜の墓地は鬼哭啾啾たる雰囲気に包まれていた。
The graveyard at night was filled with a spine-chilling atmosphere.
風が鬼哭啾啾と吹き荒れる。
The wind howls in a hair-raising manner.