v. moisten; lessen in force or effect
Now it seems that ministers may be accepting that we're moving into a world of permanently higher oil prices that will dampen economic growth.
Sentence in Classic:
The straw seats of the car hovered on the edge of combustion; the woman next to me perspired delicately for a while into her white shirtwaist, and then, as her newspaper dampened under her fingers, lapsed despairingly into deep heat with a desolate cry.
The Great Gatsby By F. Scott Fitzgerald Context