1. aperiodic not recurring at regular intervals
  2. upper deck a higher deck
  3. paradigm a standard or typical example
  4. operatic of or relating to or characteristic of opera
  5. paradox a statement that contradicts itself
  6. sporadic recurring in scattered or unpredictable instances
  7. periodic happening or recurring at regular intervals
  8. eider duck duck of the northern hemisphere much valued for the fine soft down of the females
  9. opportunity a possibility from a favorable combination of circumstances
  10. portico porch or entrance to a building consisting of a covered area
  11. aperitif alcoholic beverage taken before a meal as an appetizer
  12. episodic divided into or composed of distinct scenes or events
  13. appreciate be fully aware of; realize fully
  14. jeopardize pose a threat to; present a danger to
  15. apartheid a social policy of racial segregation
  16. operating involved in a kind of operation
  17. upbraiding a severe scolding
  18. juridic of or relating to the law or jurisprudence
  19. sybaritic displaying luxury and furnishing gratification to the senses
  20. iridic of or relating to the iris of the eye