1. inception an event that is a beginning
  2. incentive a positive motivational influence
  3. incendiary capable of causing fires or catching fire spontaneously
  4. incognito without revealing one's identity
  5. innocent free from sin
  6. insanity relatively permanent disorder of the mind
  7. incensed angered at something unjust or wrong
  8. incessant uninterrupted in time and indefinitely long continuing
  9. ancient belonging to times long past
  10. insinuate suggest in an indirect or covert way; give to understand
  11. insidious working or spreading in a hidden and usually injurious way
  12. Innocent III Italian pope from 1198 to 1216 who instituted the Fourth Crusade and under whom papal intervention in European politics reached its height (1161-1216)
  13. incense make furious
  14. intend have in mind as a purpose
  15. insipid lacking interest or significance or impact
  16. enceinte in an advanced stage of pregnancy
  17. incienso fragrant rounded shrub of southwestern United States and adjacent Mexico having brittle stems and small crowded blue-green leaves and yellow flowers; produces a resin used in incense and varnish and in folk medicine
  18. unsent not dispatched or transmitted
  19. incident a single distinct event
  20. ignescent can emit sparks or burst into flame