The kanji 陰（いん） primarily conveys the concept of "shade," "shadow," or "the hidden side." It represents areas or aspects that are concealed, not exposed to light, or characterized by darkness and secrecy. It also can refer to the female principle, opposite of yang (陽), in the yin and yang philosophy. It encompasses ideas of the covert, the negative, and the passive.

・On-yomi (音読み): イン (in) ・Kun-yomi (訓読み): かげ (kage) - shadow, shade; かげる (kageru) - to darken, to fade

⚫︎ 日陰 (ひかげ) Translation: Shade, shadow (literally "sun shadow") ⚫︎ 陰謀 (いんぼう) Translation: Conspiracy, plot (literally "shadow plan") ⚫︎ 陰性 (いんせい) Translation: Negative (e.g., in a medical test) (literally "shadow property")

The kanji 陰 (いん) is a phono-semantic compound (形声文字, keisei moji). It combines the semantic component of 阜 (こざとへん, "hill" or "mound") on the left, and the phonetic component of 垔 (in) on the right. 阜 (こざとへん) suggests a place, and 垔 (in) is borrowed for its sound, indicating a place in the shade or the shady side of a hill. The character thus originally depicted the shady side of a hill, which then expanded to encompass the broader meanings of shadow, hidden, or negative aspects.