put (something) aside for a rainy day

put (something) aside for a rainy day

To reserve something, especially money, for use in a time or period of unforeseen difficulty, trouble, or need. I know you want to buy a new TV with your bonus, but you should really put that money aside for a rainy day. I put a portion of my wages aside each month for a rainy day.
See also: aside, put, rainy
Farlex Dictionary of Idioms.
See also:
  • hold (something) back for a rainy day
  • keep (something) for a rainy day
  • save (something) for a rainy day
  • save for a rainy day
  • save, keep, etc. it for a rainy day
  • rainy
  • rainy day, a
  • a rainy day
  • half the trouble of (something)
  • mad money