Grade 9 vocabulary challenge

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Across
  1. 3. (of a voice or words) Sweet or musical; pleasant to hear.
  2. 6. A harsh, discordant mixture of sounds.
  3. 8. Representing the most perfect or typical example of a quality or class.
  4. 10. To place or deal with close together for contrasting effect.
  5. 12. Impressive or ambitious in scale, scope, or execution.
  6. 14. The occurrence and development of events by chance in a happy or beneficial way.
  7. 17. To make someone weak or infirm.
  8. 18. A lengthy and aggressive speech or lecture.
  9. 19. A constantly changing pattern or sequence of elements.
  10. 20. Characterized by vulgar or pretentious display; designed to impress or attract attention.
Down
  1. 1. Treating serious issues with deliberately inappropriate humor; flippant.
  2. 2. Having mixed feelings or contradictory ideas about something or someone.
  3. 4. Present, appearing, or found everywhere.
  4. 5. (Typically of an action or activity) Wicked, villainous, or criminal.
  5. 7. Not revealing one's thoughts or feelings readily; reserved.
  6. 9. Displaying or having a disinclination for physical exertion or effort; slow and relaxed.
  7. 11. Lasting for a very short time, transient.
  8. 13. To give a false impression, to contradict or misrepresent.
  9. 15. Too great or extreme to be expressed or described in words.
  10. 16. Having a harmful effect, especially in a gradual or subtle way.