The kanji 欠 primarily conveys the idea of "lack," "deficiency," "to lack," "to be missing," or "to be absent." It often suggests a state of incompleteness or something that is not present when it should be. It can also imply a shortage or an insufficiency.

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

⚫︎欠席（けっせき） Translation: Absence (from a meeting, school, etc.) ⚫︎欠点（けってん） Translation: Weak point, fault, defect ⚫︎不足（ふそく） Translation: Shortage, insufficiency

The kanji 欠 is a pictograph. It depicts a person with their head bent down. The top part represents the person’s head, while the bottom part indicates a person. It visually suggests someone "missing" or "lacking" their head (or perhaps, someone with their head missing due to an injury or being unwell), representing the core meaning of absence or deficiency. This visual representation evolved over time to its current form.