Lingo
[throw|pour] cold water on {sth}
to demotivate a person by talking negatively about their plans or opinions
The idiom "throw cold water on something" originated in the 19th century and refers to the act of discouraging or dampening enthusiasm for an idea, plan, or proposal. The metaphorical use of cold water suggests the cooling or extinguishing of excitement, much like pouring water on a hot or burning object. The expression is commonly used to convey the idea of discouraging or criticizing someone's ambitions or plans.
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