Monotony, Be Gone!

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Across
  1. 4. LASER, SONAR, RADAR?
  2. 8. Anxious, nervous
  3. 10. Melodious
  4. 11. Predicament
  5. 13. A glorified brochure
  6. 14. Adaptability
  7. 16. Remember, Eeyore :/
  8. 17. Good Ol’ Days
  9. 18. To kill a blank bird
  10. 19. Fickle
  11. 20. Teach much?
Down
  1. 1. Sorry, I take that back!
  2. 2. Feeling Healthy?
  3. 3. w*rd
  4. 5. Might as well
  5. 6. Harmful
  6. 7. Fancy Poverty
  7. 9. Pays rent
  8. 12. Meh..
  9. 15. Anecdotal?