1. onslaught an offensive against an enemy
  2. insolvent unable to meet or discharge financial obligations
  3. insolent marked by casual disrespect
  4. unsolvability the property that makes it impossible to solve
  5. insolubility the quality of being insoluble and difficult to dissolve in liquid
  6. unfulfilled of persons; marked by failure to realize full potentialities
  7. unselfishly in an unselfish manner
  8. mental health the psychological state of someone who is functioning at a satisfactory level of emotional and behavioral adjustment
  9. insolently in an insolent manner
  10. unsyllabled not articulated in syllables
  11. unsolved not solved
  12. unselfish disregarding your own advantages and welfare over those of others
  13. unselected not selected
  14. insolvency the lack of financial resources
  15. insularity the state of being isolated or detached
  16. insulate surround with material to protect from heat, cold, or noise
  17. bill of health a certificate saying that a departing ship's company is healthy (to be presented at the next port of arrival)
  18. dense-leaved elodea aquatic plant with deep green foliage useful to oxygenate an aquarium; sometimes placed in genus Egeria
  19. unhealthy not in or exhibiting good health in body or mind
  20. unsolicited not asked for

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