1. superficial of, affecting, or being on or near the surface
  2. substantial real; having a material or factual existence
  3. quintessential representing the perfect example of a class or quality
  4. presidential relating to a president or presidency
  5. essential basic and fundamental
  6. superstition an irrational belief arising from ignorance or fear
  7. superfluous more than is needed, desired, or required
  8. precedential having precedence (especially because of longer service)
  9. vice-presidential relating to a vice president or vice-presidency
  10. suppressant a drug that suppresses appetite
  11. supervention a following on in addition
  12. suppression forceful prevention; putting down by power or authority
  13. supersonic greater than the speed of sound in a given medium
  14. prudential arising from or characterized by prudence especially in business matters
  15. unpresidential not presidential
  16. potential existing in possibility
  17. experiential of or relating to direct observation or participation
  18. sapiential characterized by wisdom, especially the wisdom of God
  19. supernal of heaven or the spirit
  20. superannuation the act of discharging someone because of age