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

See Examples For:

once and for all

If they're authentic, these files may prove once and for all that Megrahi was guilty.

From BBC ● Jul. 25, 2026

Thankfully, Jenée Desmond-Harris has discovered a satisfying way to get rid of stickers and their gross residue once and for all.

From Slate ● Jul. 13, 2026

"Today's Supreme Court decision affirms once and for all the jury's unanimous verdict that President Donald J. Trump sexually assaulted and defamed E. Jean Carroll," said Carroll's attorney Roberta Kaplan.

From Barron's ● Jun. 29, 2026

The whole point of their years of endeavor is to end it once and for all.

From Salon ● Jun. 13, 2026

I figured it was my chance to clear my conscience once and for all.

From "Tangerine" by Edward Bloor