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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  • eat (something) up or eat up (something)
  • beat a hasty retreat
  • in public
  • stuff and nonsense
  • able to do (something) blindfolded
  • at the appointed hour
  • not up to scratch
  • with flying colors
  • hear a peep out of (someone)
  • at the top of the hour


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