Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “do someone in”

do someone in

(CAUSE TO FAIL) infml phrasal verb with do    /du/ verb (present tense does  /dʌz, dəz/, past tense did  /dɪd/, past participle done  /dʌn/)
to be the cause of someone's failure: A couple of key losses did the team in.
(Definition of do someone in (CAUSE TO FAIL) from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of do someone in

Word of the Day

navigate

to direct the way that a ship, aircraft, etc. will travel, or to find a direction across, along, or over an area of water or land, often by using a map

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More