Definition of "unpleasantness"

unpleasantness

/ʌnˈplezntnəs/

noun
usually uncountable, plural unpleasantnesses
1. (uncountable) The property of being unpleasant or disagreeable.
2. (countable) An unpleasant behaviour, occurrence, etc.
  Quotations
  Perhaps you are not so much aware as I am, of the mischief that may, of the unpleasantnesses that must, arise from a young man’s being received in this manner—domesticated among us—authorized to come at all hours—and placed suddenly on a footing which must do away all restraints.
  1814 July, [Jane Austen], chapter XVI, in Mansfield Park: […], volume I, London: […] T[homas] Egerton, […], page 322