once and for all

Idioms  

1. As a settled matter, finally, permanently, as in Once and for all, we're not hiring that organist again, or We've settled that question once and for all. This expression is in effect an abbreviation for “one time and for all time.” [Late 1400s]

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Example Sentences

He added that he wanted to "get to the bottom of the problems once and for all, work out how we fix them, whether we can fix them".

From BBC

BBC One's Inside the Factory attempted to settle the question once and for all by seeking expert advice.

From BBC

The group of Chagossians and Holloway hope their encampment will scuttle the agreement once and for all before the British Parliament rubber stamps it.

From The Wall Street Journal

“I think we need to fix them once and for all.”

From Literature

"After leading the DA into the GNU, my next chapter must be to eradicate this devastating disease from our shores once and for all," the 49-year-old said.

From Barron's