put a cap on (something)

put a cap on (something)

To establish a clear upper limit for something. If we don't put a cap on rent in the city, people are going to start being put on the streets because they won't be able to afford anywhere to live. I stick to a strict budget, putting a sensible cap on how much I can spend each on non-essential things.
See also: cap, on, put
Farlex Dictionary of Idioms.

put a cap on something

Fig. to put a limit on something. We need to put a cap on spending in every department. The city put a cap on the amount each landlord could charge.
See also: cap, on, put
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • put a cap on
  • put by
  • put (something) by
  • put (one's) back into (something)
  • put (one's) back to (something)
  • put back to
  • put (something) in with (someone or something)
  • put (something) on the block
  • put on the block
  • put a stopper on (something)