put your thinking cap on

/ˌpʊt jə ˈθɪŋkɪŋ ˌkæp ɒn/INFORMAL · B2

Meaning

to concentrate hard on how to solve a problem

Examples

  1. 1We need a new name for the book club, so let's all put our thinking caps on.
  2. 2Put your thinking cap on and tell me how we can get the sofa up these narrow stairs.
  3. 3The quiz team put their thinking caps on and came up with an answer just before time ran out.
  4. 4If you put your thinking cap on, I'm sure you'll find a cheaper way to fix the roof.
  5. 5Can you put your thinking cap on and work out why the Wi-Fi keeps dropping?

Grammar

put changes: puts, putting; the past form is also put. your changes to match the subject; with a plural subject, say put our thinking caps on.

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