na-adjective, noun
Describes a person, taste, manner, or artistic work that is cultivated, sophisticated, and free from vulgarity. Often used in literary or formal contexts.
彼女の立ち居振る舞いはとても高雅だ。
Her demeanor is very refined.
この絵には高雅な美しさがある。
This painting has an elegant beauty.
Composed of 高 (high, lofty) and 雅 (elegance, refinement). The combination suggests an elevated, graceful quality. The exact historical derivation is uncertain, but the kanji directly convey the meaning.