What does the word presumption mean?

Usage examples for presumption

  1. Vanity and presumption seemed to possess them altogether. – Roughing it in the Bush by Susanna Moodie
  2. A great presumption almost took his breath away. – The Fatal Glove by Clara Augusta Jones Trask
  3. The presumption is against them. – The Unconstitutionality of Slavery by Lysander Spooner