dampness noun2 •Moderate humidity; moisture; moistness; the state or quality of being damp.They hadn't reckoned with the attendant personality disorders, which the coldness, the darkness, the dampness, the crampedness and the loneliness were doing nothing to decrease. — 1982 •The degree to which something is damp or moist.The dampness in the writing paper caused the ink to spread and smudge. formsdampnesses