1. lovesickness a pining for a loved one
  2. tough-skinned insensitive to criticism
  3. homesickness a longing to return home
  4. toughness enduring strength and energy
  5. thickness the dimension through an object as opposed to its length or width
  6. car sickness motion sickness experienced while traveling in a car
  7. air sickness motion sickness experienced while traveling by air
  8. duskiness the state of being poorly illuminated
  9. touchiness feeling easily irritated
  10. ozone sickness illness that can occur to persons exposed to ozone in high-altitude aircraft; characterized by sleepiness and headache and chest pains and itchiness
  11. deviousness the quality of being oblique and rambling indirectly
  12. mountain sickness nausea and shortness of breath experienced by mountain climbers above ten thousand feet
  13. diffuseness the spatial property of being spread out over a wide area or through a large volume
  14. seasickness motion sickness experienced while traveling on water
  15. sickness impairment of normal physiological function affecting part or all of an organism
  16. airsickness motion sickness experienced while traveling by air
  17. touch screen a computer display that enables the user to interact with the computer by touching areas on the screen
  18. motion sickness the state of being dizzy or nauseated because of the motions that occur while traveling in or on a moving vehicle
  19. serum sickness a delayed allergic reaction to the injection of an antiserum caused by an antibody reaction to an antigen in the donor serum
  20. Thomas Aquinas (Roman Catholic Church) Italian theologian and Doctor of the Church who is remembered for his attempt to reconcile faith and reason in a comprehensive theology; presented philosophical proofs of the existence of God (1225-1274)