Difficult to use, especially for an untrained user.

Agent noun of re-use; one who re-uses.

(graphical user interface) A control created by a developer, usually by combining other controls, often intended for use in a specific application.

(computing) A set of users grouped together on a system for administrative purposes. / (computing) A community of users of a particular machine, operating system, etc.

plural of user group

plural of user experience

plural of user interface

Alternative spelling of superuser

plural of user name

(computing) A client application used by an end user, typically for a network protocol such as HTTP or FTP.