Elephant in the room
WiktionaryText

Noun



  1. A problem or difficult issue that is very obvious, but is ignored for the convenience or comfort of those involved.
    • 2008, Nicholas Rufford, "Motormouth: The car of the future, at £1,300," Sunday Times (UK), 6 Jan.,
      There is an elephant in the room that nearly every politician and green campaigner is ignoring. It’s called population growth.
 
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