Personality traits

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Across
  1. 2. having no scrapes or remorse about doing bad things; having no principles
  2. 7. the positive synonym to 'cunning' or 'sly'
  3. 9. serious in a negative way; always gloomy
  4. 10. having enough bravery and courage to do sth
  5. 12. not caring about serious things, lacking depth
  6. 14. a personality type when you can't do without doing your best and doing 100% of sth
  7. 15. thinking and caring about others rather than yourself
Down
  1. 1. very realistic, practical and sensible
  2. 3. when life gives you an opportunity, you take it
  3. 4. relating to a person's conscience; wishing to do one's work or duty well and thoroughly
  4. 5. lacking confidence
  5. 6. calm, tranquil
  6. 8. the positive synonym to 'workaholic'
  7. 11. not willing to accept anybody else's opinion; they keep doing things as they see them
  8. 13. being reluctant to buy or pay for anything extra, always wanting to tighten their belts