This is the 3117th most frequent Japanese word.
優雅
Elegant; graceful.
In this instance, 優雅 is used to characterize the aesthetic design of the house, implying sophistication and beauty.
その家は非常に優雅なデザインをしています。
That house has a very elegant design.
Here, 優雅 refers to the refinement and sophistication in the way he expresses himself verbally.
彼の優雅な言葉遣いには感心します。
I am impressed by his elegant choice of words.
Here, 優雅 describes the graceful and charming nature of her movements.