n.

1. 奢侈，鋪張；浪費[U]
   You should spend your money carefully and avoid extravagance.

   你用錢要慎重，避免浪費。

2. 過度，無節制[U]
3. 鋪張浪費之舉；放肆的言行；奢侈品[C]
   Food is a necessity, but wine is an extravagance.

   食物是必需品，而酒則是奢侈品。