Blow a Hole in

Also: Make a Hole (in one’s budget or money)

Meaning of Idiom ‘Blow a Hole in (something)’

1. To blow a hole in something means to its effectiveness or show that it is incorrect, corrupt, etc. 1Ayto, John. Oxford Dictionary of English Idioms. Oxford: Oxford U, 2010. ,2Heacock, Paul. Cambridge Dictionary of American Idioms. Cambridge: Cambridge UP, 2010.

2. In regards to money or a budget, to blow or make a hole means to cost a lot of money and thus reduce one’s savings or threaten one’s finances, profit, or budget. 3Heacock, Paul. Cambridge Dictionary of American Idioms. Cambridge: Cambridge UP, 2010.

Usage

This idiom, when not referring to money, is often used to refer to opinions or arguments. It can alse be used in regards to plans, operations, ideas, organizations, etc.

Examples of Use

“Steve blew a hole in the committee’s accusations by revealing the true culprit.”

“I’m going to blow a hole in this entire operation if you do not fix the unsafe practices.”

“The new sanctions blew a huge hole in the companies profits, forcing them to open new plants overseas.”

“We need a new roof on our house. It will make a hole in our savings but we have no choice.”

Origin

Of uncertain origin.

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Sources   [ + ]

1. Ayto, John. Oxford Dictionary of English Idioms. Oxford: Oxford U, 2010. 
2, 3. Heacock, Paul. Cambridge Dictionary of American Idioms. Cambridge: Cambridge UP, 2010.