1. inception an event that is a beginning
  2. inspire serve as the inciting cause of
  3. inspired of surpassing excellence
  4. inspiration arousal of the mind to unusual activity or creativity
  5. inspirit infuse with spirit
  6. inspirer a leader who stimulates and excites people to action
  7. insuperable incapable of being surpassed or excelled
  8. inseparable not capable of being split
  9. inspiring stimulating or exalting to the spirit
  10. inseparably without possibility of separation
  11. insipid lacking interest or significance or impact
  12. insuperably to an insuperable degree
  13. insobriety a temporary state resulting from excessive consumption of alcohol
  14. inspiratory pertaining to the drawing in phase of respiration
  15. conspiracy a plot to carry out some harmful or illegal act
  16. inspirational serving to uplift the mind, spirit, or creative powers
  17. inspiriting cheerfully encouraging
  18. aspire have an ambitious plan or a lofty goal
  19. incipient only partly in existence; imperfectly formed
  20. insupportable incapable of being justified or explained