once and for all

phrase

1

: with finality : definitively

The team proved once and for all that they are the best.

2

: for the last time

I'm telling you once and for all that I'm not going.

Examples of once and for all in a Sentence

Recent Examples on the Web

The new suit led to the ordinance to allow fortunetelling in certain parts of Fort Lauderdale once and for all, according to city documents. — Amanda Rosa, Miami Herald, 4 Sep. 2026

When their family's love curse pops up again, the siblings work with their aunts (Stockard Channing and Dianne Wiest) and Sally's kids (Joey King and Maisie Williams) to break it once and for all. — Brian Truitt, USA Today, 2 Sep. 2026

And maybe most surprisingly, good at showing us, once and for all, the profound importance of intention behind our aesthetic choices. — Valerie Monroe, Allure, 28 Aug. 2026

Until the Galileo spacecraft photographed Ida and Dactyl, astronomers suspected some asteroids could have their own moons, but Galileo proved it once and for all. — Tariq Malik, Space.com, 28 Aug. 2026

Rhymes for once and for all

• chloramphenicol
• dithiothreitol
• geospatial
• isopropanol
• paracetamol
• peroxisomal
• visuospatial
• aerosol
• alcohol
• arbitral
• basketball
• butanol