pour cold water on something
idiomPart ofcold
pour cold water on something — idiom
1. to criticize an idea or plan and make people feel less excited about it.
1.idiom
Definition
to criticize an idea or plan and make people feel less excited about it.
Example
The manager poured cold water on the proposal for a new office.
I do not want to pour cold water on your plans, but the budget is very tight.