浪費

1. Origins, structure, and basic meaning

• Structure: 浪費 is a noun and する verb for using valuable resources or time wastefully, and is read ろうひ.
• Basic usage: 資源の浪費 names the waste itself, while 時間を浪費する places the wasted resource as the object.

2. Common pitfalls and similar expressions

• の and を
  • 水の浪費 is the noun phrase “waste of water,” while 水を浪費する describes the action of wasting water.
• Difference from 消費
  • 消費 can neutrally describe consumption, whereas 浪費 judges the use as unnecessary or excessive.