The kanji 余 primarily conveys the idea of "surplus," "excess," or "remainder." It signifies something that is left over after a portion has been used or taken away. It can also imply "I," "myself," or "the rest of."

・On-yomi (音読み): ヨ (yo) ・Kun-yomi (訓読み): あま（る） (ama(ru)) - to remain, to be left over; あま（り） (ama(ri)) - surplus, the rest

⚫︎余分（よぶん） Translation: Extra, surplus ⚫︎余暇（よか） Translation: Leisure, spare time ⚫︎余計（よけい）なこと Translation: Unnecessary thing; extra thing

The kanji 余 is a phono-semantic compound (形声文字). The left side is a component suggesting "person" or "I," and the right side is a component that provides a phonetic clue, suggesting sound. Initially, it depicted a person in a house, suggesting the "remainder" of a person, or the space left inside. Over time, this evolved to represent the concepts of excess and surplus.