Across
- 4. prove accurate
- 6. able to be maintained
- 10. persistent
- 14. wisdom
- 15. verify, conform
- 17. more than enough
- 19. solving of a problem
- 22. distinguishing quality
- 23. not changing, all the same
- 24. unity
Down
- 1. allowing light to pass through
- 2. polite
- 3. universal
- 5. too long, slow
- 7. secretive
- 8. absolutely necessary
- 9. clear from blame
- 11. never done before
- 12. lacking movement
- 13. watchful, alert
- 16. not valid
- 18. phony, false
- 19. not easily convinced
- 20. requiring much effort
- 21. inspect closely