1. extreme right-winger an extreme conservative
  2. extremely high frequency 30 to 300 gigahertz
  3. extraneous not belonging to that in which it is contained
  4. extraordinary highly unusual or exceptional or remarkable
  5. extremely low frequency below 3 kilohertz
  6. extreme unction a Catholic sacrament
  7. exotic belly dancer a woman who performs a solo belly dance
  8. extremeness the quality of being extreme
  9. external angle the supplement of an interior angle of a polygon
  10. extremely to the greatest possible degree
  11. extrapolate draw from specific cases for more general cases
  12. 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
  13. extraordinarily extremely
  14. exterminator someone who exterminates
  15. cantankerous stubbornly obstructive and unwilling to cooperate
  16. western tanager of western North America
  17. extraordinaire extraordinary in a particular capacity
  18. extra innings overtime play until one team is ahead at the end of an inning; e.g. baseball
  19. extraordinariness the quality of being extraordinary and not commonly encountered
  20. extracellular located or occurring outside a cell or cells