Optimise crossword

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Across
  1. 1. nervous and uncomfortable with other people
  2. 2. the act of giving, receiving, and sharing information
  3. 4. a plant product that has a strong pleasant smell and is used to season or flavor food.
  4. 6. a strip of material worn around the wrist
  5. 8. a person who supervises
  6. 9. having a voice that is low in pitch.
  7. 11. a person who professes absolute belief in something.
  8. 15. a person who rides or travels by motorcycle
  9. 17. to become popular or fashionable
  10. 18. any way of dressing, behaving, writing, or performing that is favored at any one time or place
  11. 20. electromagnetic waves with relatively long wavelengths and low frequencies
  12. 22. Make neat and clean
  13. 23. acquired after being used by another
Down
  1. 1. relating to education between 11 and 18
  2. 3. a place where events of a specific type are held
  3. 5. by having a written message from a doctor that officially tells one to use a medicine
  4. 7. to take someone or something to a particular place, usually by car
  5. 10. the upper surface of a room that you see when you look above you
  6. 12. to grow toward or arrive at full stature or physical or mental maturity
  7. 13. the systematic study of the structure and behavior of the natural and physical world
  8. 14. the sport or activity of travelling down snowy slopes
  9. 16. not go to bed
  10. 19. a person who is visiting interesting places, especially on holiday
  11. 21. to send someone a letter, email, etc., in response to one that was sent.