a

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Across
  1. 1. A book full of real facts and information. (10 letters)
  2. 3. Looking very plain and not interesting at all. (11 letters)
  3. 6. Not being careful enough with something. (10 letters)
  4. 7. Talking to try and reach an agreement. (12 letters)
  5. 8. To go back on a promise you made. (6 letters)
Down
  1. 1. To not look after something properly. (7 letters)
  2. 2. A group that works to help others, not make money. (10 letters)
  3. 3. A "no" or a minus sign in maths. (8 letters)
  4. 4. Silly words or ideas that don't make sense. (8 letters)
  5. 5. To stop something from having an effect. (6 letters)