IPA: /ˈdæmpnəs/
KK: /dæmpnəs/
The state of being slightly wet or having moisture in the air or on a surface.
The dampness in the air made it feel cooler outside.
Dampness → It is formed from "damp" (from Middle English "damp", meaning slightly wet or moist) and "-ness" (meaning the state or quality of). The word "dampness" refers to the state of being slightly wet or moist.
Think of the word 'damp' which means slightly wet, and remember that 'dampness' describes the quality of being in that state.