1. proportional having a constant ratio
  2. proportion relation with respect to comparative quantity or magnitude
  3. proportionate being in due magnitude or extent
  4. proportionally to a proportionate degree
  5. probationary under terms not final or fully worked out or agreed upon
  6. proprietary protected by trademark or patent or copyright
  7. probationer someone released on probation or on parole
  8. preparation setting in order in advance some act or purpose
  9. proposition a suggestion offered for acceptance or rejection
  10. property owner a holder or proprietor of land
  11. proportionable proportionate
  12. propaganda information that is spread to promote some cause
  13. proportionately in proportion
  14. proportionality harmonious arrangement or relation of parts or elements within a whole (as in a design)
  15. proprietor someone who owns a business
  16. preparation fire fire delivered on a target in preparation for an assault
  17. corporation a business firm recognized by law as a single body
  18. propulsion the act of moving forward
  19. disproportionate out of proper balance
  20. provisionary under terms not final or fully worked out or agreed upon