Definition of ultra vires in English:

ultra vires

Pronunciation /ˌʊltrɑː ˈviːreɪz//ˌʌltrə ˈvʌɪriːz/

adverb & adjective

Law
  • Beyond one's legal power or authority.

    as adjective ‘jurisdictional errors render the decision ultra vires’
    • ‘An ultra vires act is one beyond the purposes or powers of a corporation.’
    • ‘As a result, a taxpayer who has made a payment pursuant to ultra vires legislation has a right to restitution.’
    • ‘It is not suggested that Byelaw 20 was itself ultra vires the powers which the primary legislation conferred upon the British Railways Board.’
    • ‘Delegated legislation is also subject to control by the courts whose judges can declare a piece of delegated legislation to be ultra vires.’
    • ‘This lesson provides an overview of the historical significance of the ultra vires doctrine, its subsequent decline in importance, and its modern status.’

Origin

Latin, literally ‘beyond the powers’.

Pronunciation

ultra vires

/ˌʊltrɑː ˈviːreɪz//ˌʌltrə ˈvʌɪriːz/