shady, secret, dark, mysterious, cold, the negative of female principle in nature
隂 centers on the absence of light or openness: a shady, dark, or secret quality. It extends naturally to coldness and the yin principle as the hidden, receptive side of nature.
隂 is a variant form of 陰. It combines ⻖ (mound, hill) with 镸, a component that likely contributes to the idea of shade or darkness, as the shady side of a hill.
The left side ⻖ is a hill, and the right side 镸 looks like a covered, shadowy area. Picture the shady, dark side of a hill where secrets hide and cold lingers.
For イン, imagine an inn hidden in the shade of a hill: inn -> イン, a dark, secret place.