nail down
To make sure something is definite and cannot change, like the details of a plan.
Meanings
To reach a definite agreement or decision, especially after negotiation.
"After weeks of talks, the two companies finally nailed down the terms of the contract."
To identify or define something precisely, such as a problem, cause, or meaning.
"Scientists are working to nail down exactly what triggers the allergic reaction."
To physically fix something in place using nails.
"He nailed down the loose floorboards so no one would trip."
To force someone to state their position or commit to something clearly.
"The interviewer tried to nail the politician down on his tax policy."
Very common in business and journalistic contexts. Often used with nouns like 'deal', 'date', 'details', 'meaning'. Can also mean to physically fix something with nails, though the figurative sense is far more frequent.
Commonly used with
Forms
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Synonyms
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