PolyUniPrePostMono

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Across
  1. 3. School for children before kindergarten.
  2. 4. Having more than the usual number of fingers or toes.
  3. 7. A test given before learning a unit.
  4. 8. A group formed by joining together.
  5. 11. A short note added at the end of a letter (P.S.).
  6. 12. A person who speaks many languages.
  7. 13. One of a kind; unlike anything else.
  8. 19. A 3‑D solid with many flat faces.
  9. 21. To bring separate parts together as one.
  10. 22. A flat shape with many straight sides.
  11. 23. A word part added to the beginning (like pre‑, re‑).
  12. 24. An action done by one side only.
  13. 25. A voice with little or no change in pitch.
Down
  1. 1. Control of a product or service by one seller.
  2. 2. Mythical horse with one horn.
  3. 3. Belief in many gods.
  4. 5. Having only one syllable (like “yes”).
  5. 6. From a time before written history.
  6. 8. Being joined together as a whole.
  7. 9. To move something to a later time; delay.
  8. 10. To look at something before it officially starts.
  9. 13. A one‑wheeled vehicle.
  10. 14. All of space, stars, and planets.
  11. 15. Doing or sounding the same at the same time.
  12. 16. A machine that measures body responses (lie detector).
  13. 17. A person who speaks only one language.
  14. 18. A single large block of stone; something massive and uniform.
  15. 20. A long speech by one person.
  16. 21. Clothing that makes a group look the same.
  17. 22. Happening after a war.