Meaning
To reduce enthusiasm, enjoyment or optimism surrounding an event, plan or situation.
Origin
A damper is a device used to regulate or reduce airflow, especially in a stove or flue; restricting the draft can weaken a fire. The English figurative expression applies this idea of suppressing intensity to feelings and occasions. Bad weather can put a damper on a celebration, and disappointing news can put a damper on enthusiasm. The phrase does not normally mean destroying something completely; it describes a noticeable cooling of mood. It is important to distinguish the airflow-control image from the similar-sounding adjective damp, although both evoke reduction rather than excitement.
Examples
The rain put a damper on our picnic.
The disappointing results put a damper on the celebration.
I don’t want to put a damper on your plans, but there’s a problem.
Frequently asked questions
What does 'Put a damper on something' mean?
To reduce enthusiasm, enjoyment or optimism surrounding an event, plan or situation.