damper

Definitions

A device that reduces the amplitude of mechanical or electrical oscillations.

A movable plate for controlling the flow of air in a furnace, stove, or fireplace.

A person or thing that has a depressing or restraining effect.

Examples

The heavy rain acted as a damper on our plans for a picnic in the park.

The mechanic replaced the faulty damper to improve the car's suspension.

His pessimistic attitude was a real damper on the team's enthusiasm.

Synonyms

deterrent check restraint curb disincentive hinderance suppressant

Antonyms

stimulant catalyst incentive encouragement booster spur impetus