1. incredulous not disposed or willing to believe; unbelieving
  2. incredulity doubt about the truth of something
  3. involved connected by participation or association or use
  4. incurability incapability of being cured or healed
  5. increment the amount by which something increases
  6. angular velocity (physics) the rate of change of the angular position of a rotating body; usually expressed in radians per second or radians per minute
  7. uncorrelated not varying together
  8. incredibility the quality of being incredible
  9. incurvate bend inwards
  10. ingraft cause to grow together parts from different plants
  11. unqualified not meeting the proper standards and requirements
  12. incurved bent into or having an inward curve
  13. incredulously in a disbelieving manner
  14. engraved cut or impressed into a surface
  15. John Greenleaf Whittier United States poet best known for his nostalgic poems about New England (1807-1892)
  16. anchor light a light in the rigging of a ship that is riding at anchor
  17. gravel pit a quarry for gravel
  18. uninvolved not engaged or taking part
  19. ungratified worried and uneasy
  20. ingredient a component of a mixture or compound