1. extremely to the greatest possible degree
  2. extreme point the point located farthest from the middle of something
  3. extrovert a person directed toward others as opposed to the self
  4. extrapolate draw from specific cases for more general cases
  5. extremity the outermost or farthest region or point
  6. extracellular located or occurring outside a cell or cells
  7. external drive a drive with its own power supply and fan mounted outside the computer system enclosure and connected to the computer by a cable
  8. extramural carried on outside the bounds of an institution or community
  9. external ear the part of the ear visible externally
  10. extemporize perform or speak without preparation
  11. extramarital characterized by adultery
  12. extremist a person who holds radical views
  13. exterminator someone who exterminates
  14. extravert (psychology) a person concerned more with practical realities than with inner thoughts and feelings
  15. exterminated destroyed completely
  16. extempore with little or no preparation or forethought
  17. extraordinary highly unusual or exceptional or remarkable
  18. external organ an organ that is situated on or near the surface of the body
  19. extemporary with little or no preparation or forethought
  20. extemporise perform without preparation