a.

1. 奢侈的；浪费的
   Don't be so extravagant; spend your money more carefully.

   别这么浪费；花钱节省些。

2. 放肆的；过度的，过分的
   He has some extravagant expectations.

   他抱有奢望。

   extravagant behaviors

   放肆的行为

adj.

1. lacking restraint in spending money or using resources.
   ▸resulting from or showing this:

   extravagant gifts.
2. exceeding what is reasonable or appropriate:
   extravagant claims.