rack one's brains
to try hard to think of something or remember something
I have been racking my brains all day trying to remember the man's name.

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  • racked with pain
  • rail at (someone) about (something)
  • rain (something) out or rain out (something)
  • rain cats and dogs
  • rain on (someone's) parade
  • rain or shine
  • raise a fuss
  • raise a hand against (someone or something)
  • raise a stink about (something)
  • raise an objection to (someone or something)
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  • on one's high horse
  • hold out (one's hand)
  • with one's tail between one's legs
  • world is one's oyster
  • give (someone) the go-ahead
  • set (someone) back on his or her heels
  • beg to differ with (someone)
  • drop off (someone or something) or drop (someone or something) off
  • melt in one's mouth
  • hand down (something) or hand (something) down

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