underspend
nounEtymology From under- + spend.
1
An amount by which an allocated amount is not expended.
- Any underspends will revert to the general fund at the end of the year.
- He also maintained that the final audited underspend was £322m, including additional estimates.2012 July 10, Jessica Shankleman, “Government defends £400m energy and climate budget underspend”, in The Guardian: