overspend
verb [ I or T ]
uk/ˌəʊvəˈspend/ usoverspent | overspent FINANCE
to spend more money than you have or more than was planned or agreed:
Credit cards encourage people to overspend, he says.
overspend on sth The company overspent on its advertising.
There are penalties for federal officials who knowingly overspend their budgets.
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underspend verb
overspend
noun [ S ]
UK uk/ˌəʊvəˈspend/ usuk/ˈəʊvəspend/ us FINANCE
an amount of money spent by an organization or person that is more than was planned or agreed:
The auditor expressed concern at the council's overspend of €100 million.
an overspend on sth The organization had attempted to conceal a huge overspend on its new headquarters.
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underspend noun