This is the 3050th most frequent Chinese word.
费
"费" means "expense," "cost," or "to spend."
Exhaustive, indicating demands mental effort.
这段旅程非常费心。
This journey was very worrisome.
Exhaustive, indicating consuming time.
修理这台电脑可能会很费时。
Repairing this computer might be time-consuming.
Fee, referring to a specific charge for a service.