Vocab challenge

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Across
  1. 3. to follow established rules or guidelines; to adapt
  2. 5. to assist; to make something happen more smoothly
  3. 7. without logic, haphazard, random
  4. 8. unclear; to be understood in more than one way
  5. 9. usually used to describe the arrival of something important
  6. 10. to predict
  7. 11. very, very important; full of life; indispensable
Down
  1. 1. fundamental element
  2. 2. to have the same opinion; to agree
  3. 4. to change; to make different
  4. 6. to be in a disordered, disturbed condition
  5. 9. old, having a very long history