opportunity cost
noun /ˌɒpəˈtjuːnəti kɒst/
  /ˌɑːpərˈtuːnəti kɔːst/
[countable, uncountable]- the fact that when you choose one option, you lose the potential benefits of the other options
- There may be an opportunity cost to not having your money invested elsewhere.
 - Consider the opportunity cost of accepting a job because you are, by default, rejecting everything else out there.
 - The programme lost money when opportunity costs were taken into account.
 - We need to consider the opportunity cost represented by lost capacity at closed plants.