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