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Definition

to make something (e.g. a decision or plan) firm or certain

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In Context

  • "They haven't nailed down their vacation plans yet."
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Related Idioms

p

pin down

To identify something (e.g. a decision or plan) clearly or specificall…

 s

set in stone

To render something permanent, certain, or firm.

 t

the king is dead, long live the king

Said when someone has stepped down or something is succeeded by someon…

 f

force down someone's throat

To shove something down someone's throat.

 r

ram something down someone's throat

To shove something down someone's throat.

 b

buckle down

To apply oneself to study, or a task or work; to focus on or take a se…
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