The kanji 允 primarily conveys the meaning of "to permit," "to allow," or "to approve." It suggests a sense of consent, agreement, or the granting of authority. It can also imply fairness or justice in some contexts. The core meaning revolves around the idea of acceptance or sanctioning.

・On-yomi (音読み): イン (in) ・Kun-yomi (訓読み): まこと (makoto - rarely used in modern Japanese)

⚫︎ 許允 (きょいん) Translation: Permission; Approval. ⚫︎ 允可 (いんか) Translation: Approval; Sanction. ⚫︎ 允当 (いんとう) Translation: Fair; Just; Appropriate.

The kanji 允 is a 形声文字 (keisei moji - phono-semantic compound), meaning it is formed by combining a semantic component (a part indicating meaning) and a phonetic component (a part indicating pronunciation). The original form of the character might depict a person bowing or kneeling in agreement. The upper part is related to the word 兄 (kyou, meaning "older brother") which suggested respect. The lower portion indicates that the person has the right to allow. Therefore, the kanji's meaning gradually shifted towards "to permit" or "to allow."