At last he said: ’So startling an announcement, so confidently made, and by such lips, is really disconcerting in the last degree.
She was not afraid of him, or in any way disconcerted; she seemed to have her mind entirely preoccupied with the occasion of her visit, and to have substituted that consideration for herself.
And she said it with such great condescension as well as with such great compassion for him, that Bounderby, — far more disconcerted than if she had thrown her workbox at the mirror, or swooned on the hearthrug, — corked up the smelling-salts tight in his pocket, and thought, ’Now confound this woman, who could have even guessed that she would take it in this way!’
There are no more uses of "disconcerting" in the book.
Show samples from other sources
It was disconcerting to realize the experts don’t really understand what is going on either.
Changing teachers in the middle of the semester was disconcerting.