Joshua's crossword

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Across
  1. 2. savagely fierce, cruel, or violent
  2. 4. to make it cheaper you _________ with someone
  3. 5. everyone is ______ in a way
  4. 6. there are so many ________ on this square based pyramid
Down
  1. 1. conductive to success ;favourable
  2. 3. form a theory or conjecture about a subject without firm evidence