1. accustomed commonly used or practiced; usual
  2. acceptance the state of being satisfactory
  3. accustom familiarize psychologically or physically
  4. accidence the part of grammar that deals with the inflections of words
  5. exceedance (geology) the probability that an earthquake will generate a level of ground motion that exceeds a specified reference level during a given exposure time
  6. excitement the state of being emotionally worked up
  7. customize make to specifications
  8. acquisitiveness strong desire to obtain and possess
  9. jackstones game equipment consisting of one of several small six-pointed metal pieces that are picked up while bouncing a ball in the game of jacks
  10. customise make to specifications
  11. ecstatic feeling great rapture or delight
  12. customs money collected under a tariff
  13. acoustics the study of the physical properties of sound
  14. accusative case the case of nouns serving as the direct object of a verb
  15. anastomose come together or open into each other
  16. acoustic impedance opposition to the flow of sound through a surface
  17. acoustician a physicist who specializes in acoustics
  18. customhouse a government building where customs are collected and where ships are cleared to enter or leave the country
  19. acoustic meatus either of the passages in the outer ear from the auricle to the tympanic membrane
  20. adamance resoluteness by virtue of being firm and unyielding

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