come up short
Definitions
To fail to reach a required or expected standard, amount, or goal.
To be insufficient or inadequate in performance or supply.
Examples
Despite their best efforts, the team came up short in the championship game.
We need to raise more funds because our current donations will come up short for the project.
His explanation for being late came up short and failed to convince his boss.
Synonyms
fail underperform fall flat miss the mark lack stumble falter