いらっしゃるirassharu
1.

A respectful way to indicate someone's presence or movement, signifying that they are coming, going, or being somewhere.

2.

A polite expression used to acknowledge someone’s existence or actions, often used in formal contexts to show honor or deference towards the person being referred to.

3.

A verb that transforms the action of going, coming, or existing into a form that conveys respect, frequently employed in speech to elevate the status of the subject.