費やす

1. Origins, structure, and basic meaning

• Structure: Written 費やす and read ついやす, it means devoting and consuming time, money, or effort for a particular purpose.
• Basic usage: It describes three months spent completing a model and time one wants to avoid wasting on needless work.

2. Common pitfalls and similar expressions

• Resource spent on an object
  • It presents time or another resource as deliberately used up on something, not merely elapsed.