Definition of peremptoriness in English:

peremptoriness

noun

  • See peremptory

    • ‘Once in the cell, by sheer peremptoriness the young lawyer cajoles him to change outer clothes, cravat, and boots with him and to shake out his hair from its ‘queue’, to look more like his.’
    • ‘She attempts to counter mounting evidence by discounting prophecies, but the brevity, the peremptoriness of her responses to his anguished questions is striking.’

Pronunciation

peremptoriness

/pəˈrɛm(p)t(ə)rɪnəs/