Idioms

keep (something) under one's hat
to keep a secret, to not tell something
My coworker will not say where he is going for his holiday. He wants to keep it under his hat.

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  • keep (something) under wraps
  • keep a civil tongue
  • keep a close rein on (someone or something)
  • keep a close watch on (someone or something)
  • keep a close watch over (someone or something)
  • keep a secret
  • keep a stiff upper lip
  • keep a straight face
  • keep a tight rein on (someone or something)
  • keep abreast of (something)
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  • in league with (someone)
  • eyes are bigger than one's stomach
  • jump at (something)
  • come over
  • come along
  • have a bone to pick with (someone)
  • have a familiar ring
  • take a dim view of (something)
  • muster up the courage
  • carry through with (something)


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