prove out

Idioms  

1. Succeed, turn out well, as in Farm-raised trout has proved out so well that the fish industry plans to experiment with other species. [Mid-1900s]

---

Example Sentences

See Examples For:

prove out

Based on an actual meeting between the two, it’s a cagey game of cat-and-mouse, with the publisher taking the measure of a nervous, still-inexperienced journalist, looking for reassurance that his reporting will prove out.

From Los Angeles Times ● May 1, 2026

Of course, the managers and funds whose portfolios prove out through the cycle will likely end up with bigger shares of inflows and assets in the future.

From The Wall Street Journal ● Feb. 6, 2026

They also said they believe a complete overhaul of the business "will prove out of reach".

From BBC ● Aug. 24, 2025

If those estimates prove out, it would show a lack of progress on underlying price pressures for the last six months.

From Reuters ● Jun. 29, 2023

I will undertake to prove out of their own mouths that their master was from home that night instead of being as they pretend, in his bed.

From The Trial of Charles Random de Berenger, Sir Thomas Cochrane, commonly called Lord Cochrane, the Hon. Andrew Cochrane Johnstone, Richard Gathorne Butt, Ralph Sandom, Alexander M'Rae, John Peter Holloway, and Henry Lyte for A Conspiracy In the Court of King's Bench, Guildhall, on Wednesday the 8th, and Thursday the 9th of June, 1814 by Gurney, William Brodie