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Synonyms

do in

British  

verb

  1. to murder or kill

  2. to exhaust

"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

do in Idioms  
  1. Tire out, exhaust, as in Running errands all day did me in . [ Colloquial ; early 1900s] Also see done in .

  2. Kill, as in Mystery writers are always thinking of new ways to do their characters in . [ Slang ; early 1900s] Also see def. 4.

  3. Ruin utterly; also cheat or swindle. For example, The five-alarm fire did in the whole block , or His so-called friend really did him in . [First half of 1900s]

  4. do oneself in . Commit suicide, as in She was always threatening to do herself in . [ Slang ; first half of 1900s]


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:

Are there fun things to do in the area all year long?

From MarketWatch Sep. 3, 2026

“They are trying to do good in a fallen world and realize the most they can do is less harm than someone else would do in that same role,” he explained.

From The Wall Street Journal Sep. 2, 2026

“There were budget implications to doing that, so we really did all the things that are viable to do in this legislative session,” Zbur said.

From Los Angeles Times Sep. 1, 2026

"Frequently, we know a little more about this in people than we do in dogs," Creevy said.

From Science Daily Aug. 29, 2026

It’s incredibly difficult to say how much damage a radioactive isotope will do in the human body.

From "Meltdown" by Deirdre Langeland

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