Dictionary.com
Thesaurus.com
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

But when it comes to predicting cliff collapses along California’s iconic shoreline, the science has been infamously tricky to pin down.

From Los Angeles Times Jul. 14, 2026

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

From Science Daily Jun. 24, 2026

She does not inhabit the house, the way the other mothers do; she’s airy and hard to pin down.

From "Cat's Eye" by Margaret Atwood

Vocabulary.com logo
by dictionary.com

Join 12,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training