Definition of mysteriousness in US English:

mysteriousness

noun

  • See mysterious

    • ‘Then he comes out with it - a phrase that haunts me in its indecipherable mysteriousness.’
    • ‘The mysteriousness can itself contribute to the effect of the poem.’
    • ‘It has a striking mysteriousness, a haunting eeriness.’
    • ‘As a child, I liked the frightening part of the story, but also its mysteriousness.’
    • ‘‘I wanted to retain a kind of magical mysteriousness,’ says Caple.’