Kasutaja
Kasutaja is an Estonian noun meaning "user" and is used to describe a person who uses a product, service, or system. It is common in technology, software documentation, websites, and consumer services to denote an individual interacting with digital or physical devices. The term appears in manuals, help texts, terms of service, and user interfaces, and covers both end users and administrators who operate a system on behalf of others.
Etymology and grammar: The word is formed from the verb kasutama "to use" with the agent suffix
Usage in technology and services: In computing and online contexts, kasutaja refers to the person who operates
See also: In Estonian technical and legal texts, kasutaja is the standard generic term for a person