na-adjective, noun
Literary word describing a serene, undisturbed atmosphere or state of mind. Often used in written descriptions of nature, gardens, or refined settings.
山寺の清閑な雰囲気に心が洗われた。
My heart was cleansed by the tranquil atmosphere of the mountain temple.
この庭園は都会の喧騒を忘れさせる清閑さがある。
This garden has a peacefulness that makes you forget the hustle and bustle of the city.