The kanji character 欠, pronounced as けつ in Japanese, primarily signifies "lack," "deficiency," "to lack," or "to be missing." It implies an absence or shortage of something, whether it be a physical object, a quality, or an action. It often conveys a sense of incompleteness or inadequacy.

・On-yomi (音読み): ケツ (ketsu) ・Kun-yomi (訓読み): かける (kakeru) - to lack, to be missing

⚫︎ 欠席（けっせき） Translation: Absence (from a meeting, class, etc.) ⚫︎ 欠点（けってん） Translation: Weak point, shortcoming, defect ⚫︎ 欠乏（けつぼう） Translation: Lack, shortage, deficiency

The kanji 欠 is a pictograph. It depicts a person bending over. The top part represents the person's head, and the lower parts represent the legs. The original meaning was related to "to yawn" or "to exhale" (as if the mouth is open). Over time, it evolved to represent a lack or deficiency, likely due to the emptiness or absence implied by an open mouth.