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to nail down

to nail down

20 4.6
Decide the exact details of a plan or agreement
  • phrasal verb
  • /neɪl daʊn/
translation icon : concretar
  • Let's meet tomorrow to nail down the final details for the project.
  • nail down the details
  • nail down an agreement
  • nail down the date

So OK, so I think we've nailed down that first part of the day.

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Examples

  • Ultimately the volunteer wants to nail down a commitment to vote for the candidate.

    Blog text (20)
  • The last step was a face-to-face meeting to nail down the specifics.

    Blog text (20)
  • We're trying to nail down the significant details.

  • Did you nail down an apartment?

  • Well, let's see if we can nail down his time line.

  • Reinhardt, it appears that the staff has neglected to nail down some details.

    Fiction book (1992)
  • Direct macroeconomic effects of population growth on poverty are harder to nail down.

    Academic text (1998)
  • Quilter hopes to nail down dates for the artifacts more accurately within the site's 150-year occupation.

    Academic text (2011)
  • Can we nail down a time for the meeting so everyone can prepare?

  • We need to nail down an agreement to ensure that all parties are satisfied.

Synonyms

to settle
vsto nail down
596 3.3

To end an argument by agreement or decision

is more general applying to deciding or specifying beyond disputes
to specify
vsto nail down
118 3.5

To give clear, exact details about something

is about making a final decision rather than just stating details
to nail
vsto nail down
78 6.0

To find exactly when or why something happened

focuses on making something final or agreed instead of only pinpointing
to finalize
vsto nail down
  • US
74 3.8

Complete the last details to make something ready

focuses more on reaching an agreement rather than only finishing
to lock in
vsto nail down
29 4.4

To make a decision or plan fixed so it cannot be easily changed

is about making something definite without necessarily preventing change
to hammer out
vsto nail down
23 4.2

To talk about something in detail until people reach an agreement

is the act of making something definite rather than the negotiation process
to seal the deal
vsto nail down
  • Informal
22 4.0

Make an agreement official by accepting its final terms

is broader, making anything definite not only confirming agreements
to pin down
vsto nail down
20 3.5

To make something exact, like a date or reason

is about making a final settled decision rather than only defining
to clinch
vsto nail down
1 4.8

To bend the end of a nail to hold things together

applies to making decisions final not physical fastening or joining
to peg down
vsto nail down
  • Informal
5.3

To make exact details clear and certain

emphasizes finality and agreement rather than only clarification
to hash out a deal
vsto nail down
  • Informal
4.9

To discuss the details of an agreement until both sides agree

focuses on making something definite instead of the discussion stage

How Final

to finalize
  • US
74 3.8
to nail down
20 4.6
to decide
1.0

Surface Forms

nail down infinitive
nailed down past participle
nailing down present participle
nails down third person singular

Morphology

nail + down

The meaning 'make something definite or certain' is directly based on the physical image of nailing something down to fix it in place, so a learner who knows the literal sense of 'nail' (to fasten) and 'down' can often infer the metaphorical extension. However, the shift from physical fastening to finalizing details/agreement is a metaphorical step that not all B1 learners will automatically predict, so the relation is partial rather than fully compositional.

Etymology

Nail down comes from putting the last nail in place to hold something down and finish it. So when you nail down the details you 'make them definite and final'.