profligate /ˈprɒflɪɡɪt/

• 1. 

  ADJ Someone who is profligate spends too much money or uses too much of something. 挥霍的; 浪费的 [正式]

  例：

  ...the most profligate consumer of energy in the world.

  ...世界上能源浪费最严重的消费者。