i-adjective
Describes air, weather, or a place that feels unpleasantly damp or humid. Often carries a negative nuance of stickiness or mustiness.
梅雨の時期は部屋が湿気っぽくなる。
During the rainy season, the room gets damp.
この地下室は湿気っぽくてカビ臭い。
This basement is damp and smells musty.