理事長（りじちょう、rijichou）
- board chairman

The word 理事長, read りじちょう (r i ji chou), is a Japanese title and refers to the "chairman of the board," "president of the board of directors," or "executive director." It's a senior leadership position, typically found in organizations like companies, schools, universities, hospitals, and non-profit organizations. 理事長 is responsible for overseeing the board of directors and managing the overall direction and strategic goals of the organization. They often represent the organization to the public and stakeholders. The exact duties can vary depending on the specific organization, its size, and its structure.

⚫︎学校の理事長は新しい校舎の建設を承認しました。 Translation: The chairman of the board of the school approved the construction of a new school building. ⚫︎理事長は会社の業績について報告しました。 Translation: The executive director reported on the company's performance. ⚫︎病院の理事長は地域社会への貢献を強調した。 Translation: The president of the hospital emphasized contributions to the local community.

You would use 理事長 when referring to or addressing the person holding this position within an organization. It's used in formal settings, such as business meetings, official documents, and formal announcements. When speaking to a 理事長, you would typically use polite language (keigo).

理事長 is written in kanji 理事長. The reading is りじちょう. It is not typically written in hiragana or katakana. The okurigana (the suffix hiragana) is standard and there are no common variations in spelling.

⚫︎ 会長 (かいちょう - kaichou) - Chairman (often of the board) ⚫︎ 社長 (しゃちょう - shachou) - President (of a company) ⚫︎ 代表 (だいひょう - daihyou) - Representative; often used in titles

There aren't direct antonyms as this is a title, not an action or characteristic. The opposite would be an individual not holding a senior leadership position within the organization.

新しい理事長は、企業の将来のビジョンについて話しました。 ・Translation: The new chairman of the board talked about the company's future vision. ・Explanation: This sentence demonstrates the typical usage of 理事長 referring to the person in the leadership role setting out the vision of the organization.

彼は理事長に昇進しました。 ・Translation: He was promoted to chairman of the board. ・Explanation: This shows how the title is used to denote an advancement within the organizational structure.

理事 (riji) means "board member" or "director." 長 (chou) means "head," "chief," or "chairman." So, the word literally means "head of the board" or "chairman of the board of directors".