1. pretentious creating an appearance of importance or distinction
  2. ostentatious intended to attract notice and impress others
  3. opportunity a possibility from a favorable combination of circumstances
  4. opportunity cost cost in terms of foregoing alternatives
  5. portentous of momentous or ominous significance
  6. Aptenodytes large penguins
  7. opportunistic taking advantage of any circumstance of possible benefit
  8. opportunist a person who places expediency above principle
  9. Portunidae swimming crabs
  10. opportuneness timely convenience
  11. pertinent being of striking appropriateness
  12. importunate making persistent or urgent requests
  13. opportune suitable or advantageous especially for a particular purpose
  14. operating theater a room in a hospital equipped for the performance of surgical operations
  15. peritonitis inflammation of the peritoneum
  16. opportunism taking advantage of favorable circumstances selfishly
  17. redundant more than is needed, desired, or required
  18. pretended adopted in order to deceive
  19. operating theatre a room in a hospital equipped for the performance of surgical operations
  20. appurtenance equipment consisting of miscellaneous articles

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