1. reformative tending to reform
  2. 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
  3. informative serving to instruct or enlighten
  4. performance the act of doing something successfully
  5. formative minimal language unit that has a syntactic function
  6. perforate make a hole into or between, as for ease of separation
  7. confirmative serving to support or corroborate
  8. preservative tending or having the power to protect or prevent decay
  9. affirmative giving assent
  10. perfective a tense of verbs used in describing action that has been completed (sometimes regarded as perfective aspect)
  11. perforated having a number or series of holes
  12. performing the performance of a part or role in a drama
  13. permeative spreading or spread throughout
  14. promotive tending to further or encourage
  15. pair formation the transformation of a gamma-ray photon into an electron and a positron when the photon passes close to an atomic nucleus
  16. prefigurative indistinctly prophetic
  17. preoperative happening or done before and in preparation for a surgical operation
  18. preventative tending to hinder
  19. provocative serving or tending to excite or stimulate
  20. reformatory tending to reform

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