1. a posteriori involving reasoning from facts or particulars to general principles or from effects to causes
  2. posterior located at or near the end of a structure
  3. abstract existing only in the mind
  4. apostrophe a mark used to indicate the omission of one or more letters
  5. posterity all future generations
  6. austerity excessive sternness
  7. opposite word a word that expresses a meaning opposed to the meaning of another word, in which case the two words are antonyms of each other
  8. abstruse difficult to understand
  9. exterior situated in the outdoors or outside of a building
  10. anterior of or near the head end or toward the front plane of a body
  11. posteriority the quality of being toward the back or toward the rear end
  12. pesterer a persistently annoying person
  13. posturer someone who behaves in a manner calculated to impress or mislead others
  14. boisterous marked by exuberance and high spirits
  15. a priori reasoned from a general principle to a necessary effect
  16. abstemious marked by temperance in indulgence
  17. upstairs on a floor above
  18. epistolary written in the form of letters or correspondence
  19. upstroke a stroke normally made in an upward direction
  20. upstair on or of upper floors of a building