remaining strength; reserve power; surplus energy
Refers to physical, mental, or organizational capacity left after some effort or task. Often used in contexts like 余力がある (have reserves) or 余力を残す (conserve strength).
I still have some reserve strength, so I can run a bit more.
I gave it my all for exam prep without conserving any energy.
money to spare; financial leeway
Used when one has extra funds beyond what is needed. Common in expressions like 余力があれば (if there is money to spare).
I have no money to spare this month, so let's cut back on eating out.
I still have some energy left, so I can run a bit more.
I kept some strength in reserve for the second half of the marathon.
After hours of work, I'm running out of reserve energy.
If we have some money to spare, I'd like to buy new equipment.