Let's Learn Some New Words

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Across
  1. 2. that is legally or officially acceptable.
  2. 3. to go somewhere even though you know that it might be dangerous or unpleasant.
  3. 6. having or causing problems or difficulties.
  4. 7. the state of being legally or officially acceptable.
  5. 8. often changing
  6. 9. an area of low land between hills or mountains, often with a river flowing through it.
Down
  1. 1. an informal talk.
  2. 2. to disappear suddenly
  3. 4. connected with the skills needed for a particular job, sport, art, etc.
  4. 5. to make food,drink,etc. go down your throat into your stomach
  5. 6. having the usual qualities or features of particular type of person, thing or group