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Synonyms

pin down

British  

verb

  1. to force (someone) to make a decision or carry out a promise

  2. to define clearly

    he had a vague suspicion that he couldn't quite pin down

  3. to confine to a place

    the fallen tree pinned him down

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

pin down Idioms  
  1. Fix or establish clearly, as in The firefighters finally were able to pin down the source of the odor . [Mid-1900s]

  2. Force someone to give precise information or opinions, as in The reporter pinned down the governor on the issue of conservation measures . [c. 1700]


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.

See Examples For:

Exact net worths are impossible to pin down, given that candidates are required to list their assets in broad ranges, not exact dollar amounts.

From Salon Jul. 24, 2026

Even Witkoff’s friends can’t pin down how the two became so close.

From Slate Jul. 22, 2026

Sasaki’s troubles this season have been hard to pin down since his last win on May 23, as Sasaki tries to claw back the triple-digit velocity that’s escaped him as of late.

From Los Angeles Times Jul. 9, 2026

What’s much harder to pin down is why these differences arise.

From Science Daily Jun. 24, 2026

Just like Jupe, she’s hard to pin down.

From "Odd One Out" by Nic Stone

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