1. substance the real physical matter of which a person or thing consists
  2. substantial real; having a material or factual existence
  3. substantiate establish or strengthen as with new evidence or facts
  4. substantive having a firm basis in reality and therefore important
  5. subsidence a gradual sinking to a lower level
  6. substantially to a great extent or degree
  7. subsistence a means of surviving
  8. eubstance the property of holding together and retaining its shape
  9. subsequent following in time or order
  10. substation a subsidiary station where electricity is transformed for distribution by a low-voltage network
  11. obstinate marked by tenacious unwillingness to yield
  12. substantiation the act of validating
  13. substantiative serving to support or corroborate
  14. substantiality the quality of being substantial or having substance
  15. subsidize support, as through grants or other funds
  16. insubstantial lacking material form
  17. unsubstantial lacking material form or substance; unreal
  18. obstinacy resolute adherence to your own ideas or desires
  19. substance abuse excessive use of drugs
  20. subsequence something that follows something else