1. alliteration use of the same consonant at the beginning of each word
  2. perforation a hole made in something
  3. proper fraction a fraction with a numerator smaller than the denominator
  4. aberration a state or condition markedly different from the norm
  5. arbitration giving authoritative judgment
  6. appropriation a deliberate act of acquisition, often without permission
  7. proliferation a rapid increase in number
  8. improper fraction a fraction whose numerator is larger than the denominator
  9. corporation a business firm recognized by law as a single body
  10. abbreviation shortening something by omitting parts of it
  11. evaporation the process of becoming a suspension of particles in the air
  12. aspiration a cherished desire
  13. peroration the concluding section of a rhetorical address
  14. perversion the action of corrupting something
  15. proportion relation with respect to comparative quantity or magnitude
  16. reverberation a remote or indirect consequence of some action
  17. theory of preformation a theory (popular in the 18th century and now discredited) that an individual develops by simple enlargement of a tiny fully formed organism (a homunculus) that exists in the germ cell
  18. reparation something done or paid in expiation of a wrong
  19. expropriation taking out of an owner's hands
  20. perpetration the act of committing a crime