to disappear; to vanish
朝の霧が午前中に消え失せた。
The morning fog disappeared by mid-morning.
長年感じていた不安が消え失せていた。
The anxiety I had felt for many years had vanished.
彼女の恐れは勇気とともに完全に消え失せる。
Her fear will completely vanish along with her courage.