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Definitions

nail down

NOUN
establish conclusively
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The album’s closer, “Driftin’ Cowboy,” will nail down this collection for some as outright folk.

From The Wall Street Journal • Apr. 2, 2026

When Rupert’s children watched its too-close-for-comfort version of the chaos following Logan Roy’s sudden death, they leapt to nail down their family’s succession plan before it was too late.

From Salon • Mar. 14, 2026

The death toll in Iran has been difficult to nail down, but Iran’s ambassador to the U.N. on Friday put the number at more than 1,300.

From Los Angeles Times • Mar. 8, 2026

EU-Swiss ties are currently governed by a patchwork of agreements, and the two have for years been striving to nail down a broader cooperation agreement.

From Barron's • Feb. 25, 2026

Jahrling wanted to nail down this Marburg as fast as he could.

From "The Hot Zone" by Richard Preston




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