What it means
いらっしゃる is an honorific verb meaning “to come,” “to go,” or “to be” in a place. It is used when showing respect toward the person who comes, goes, or is present. The meaning is determined by the context and location expressions. Its plain-form shape is いらっしゃる, while the polite form is いらっしゃいます.
Usage note
いらっしゃる is not casual or familiar despite its plain-form shape; it remains respectful and honorific. Do not use it for yourself when simply describing your own actions. The polite counterpart いらっしゃいます is used at the end of a polite sentence.
How to use it
田中先生は校長室にいらっしゃいます。
Teacher Tanaka is in the principal's office.
田中先生は校長室にいらっしゃる。
Teacher Tanaka is in the principal's office.
