A four-character idiom meaning to vanish completely like clouds and mist; used in literary or poetic contexts to describe worries or obstacles disappearing entirely.
彼女は深呼吸をして、不安が雲消霧散するのを期待した。
She took a deep breath, hoping her anxiety would disappear like clouds and mist.
問題の説明を受けて、長年の疑問が雲消霧散した。
After the problem was explained, years of doubts vanished.
夕立が上がると、山の霧は雲消霧散し、景色がはっきり見えた。
When the evening shower stopped, the mountain mist cleared away and the scenery became visible.