American English

Definition of dwell on/upon phrasal verb from the Oxford Advanced American Dictionary

 

dwell on/upon

 phrasal verb
phrasal verb
 
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Phrasal Verbs

    dwell on/upon something

     
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  1. 1to think or talk a lot about something, especially something it would be better to forget So you made a mistake, but there's no need to dwell on it.
  2. 2to look at something for a long time