One who usurps.

Alternative spelling of username

(Britain) The sergeant-at-arms in the House of Lords.

To announce the arrival of something; to herald. / To begin something with preparatory material; to introduce.

(dated) A female usher.

A person, in a church, cinema etc., who escorts people to their seats. / A male escort at a wedding. / A doorkeeper in a courtroom.

To guide people to their seats. / To accompany or escort (someone). / (figuratively) To precede; to act as a forerunner or herald. / (figuratively, transitive) to lead or guide somewhere

The state or condition of being usable. / The degree to which an object, device, software application, etc. is easy to use with no specific training.

The wrongful seizure of something by force, especially of sovereignty or other authority. / Trespass onto another's property without permission. / A taking or use without right.

Initialism of United States Coast Guard.