Definition of oratorial in US English:

oratorial

adjective

  • See orator

    • ‘Mopping up the attention, he adopted his most oratorial voice to declare that people must hold the Government and the EU accountable by voting No.’
    • ‘It is true - his oratorial skills are only matched by his prowess as an actor!’
    • ‘These elections will be a signal of whether he can match oratorial style with ballot box substance.’

Pronunciation

oratorial

/ˌôrəˈtôrēəl/