Idioms

back up (someone or something) or back (someone or something) up
to support someone or something
The supervisor made a mistake and his manager refused to back him up.

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  • back up (something) or back (something) up
  • back-to-back
  • bad blood (between people)
  • bad-mouth (someone or something)
  • bag of tricks
  • bail out (of something)
  • bail out (someone or something) or bail (someone or something) out
  • bail out (someone) or bail (someone) out
  • balance the books
  • ball of fire
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  • put (someone) on or put on (someone)
  • make a face (at someone)
  • leave oneself wide open for (something)
  • run into a brick wall
  • fifty-fifty
  • line one's own pockets
  • have one's ear to the ground
  • step in
  • sell (something) out or sell out (something)
  • inside and out


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