hold in reserve and keep in reserve

hold (something) in reserve

To save something or set it aside for future use. Most people would be shocked if they knew how much money the government holds in reserve. I'm holding those snacks in reserve for the road trip.
See also: hold, reserve

keep (something) in reserve

To save something or set it aside for future use. Most people would be shocked if they knew how much money the government keeps in reserve. I'm keeping those snacks in reserve for the road trip.
See also: keep, reserve
Farlex Dictionary of Idioms.

hold someone or something in reserve and keep someone or something in reserve

Fig. to hold back someone or something for future needs. I am holding the frozen desserts in reserve, in case we run out of cake. We are holding Sharon in reserve. Keep a few good players in reserve.
See also: and, hold, keep, reserve
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • hold (something) in reserve
  • keep (something) in reserve
  • in reserve
  • be shortlisted
  • from all sides
  • from/on all sides
  • be to the good
  • be (something) to the good
  • not believe ears
  • assert (oneself)