dampenPronunciation: /ˈdamp(ə)n/Translate dampen | into French | into German | into Italian | into Spanish Definition of dampen verb [with object] 1make slightly wet:the fine rain dampened her face 2make less strong or intense:nothing could dampen her enthusiasm reduce the amplitude of (a sound source):slider switches on the mixers can dampen the drumsdampen in other Oxford dictionaries Definition of dampen in the US English dictionary