na-adjective, noun
luxurious; magnificent; extravagant
Describes something grand, lavish, and opulent, often with a sense of refined elegance. Used for lifestyles, interiors, clothing, and events.
彼女は豪奢なドレスを着てパーティーに現れた。
She appeared at the party wearing a luxurious dress.
そのホテルの
The hotel lobby is decorated with magnificent ornaments.
Compound of 豪 (ごう, 'magnificent, powerful') and 奢 (しゃ, 'luxury, extravagance'). The exact historical derivation is uncertain, but the combination naturally conveys the meaning of great luxury.