shortfall
verb
- fall short
noun
- a failure to come up to expectation or need
Wiktionary
noun
Etymology: Deverbal from fall short. By surface analysis, short + fall.
- An instance of falling short, of not meeting a quota, an obligation, or more generally any expected target.
“Due to a shortfall in revenue, we will have to make some cuts.”
- The amount by which such a quota, obligation, etc., was missed.