Across
- 1. elephant tusk
- 3. secret
- 4. a group of similar things
- 6. use of physical or mental energy
- 9. come up with a mental effort
- 11. wanting to learn about something
- 13. a clearly expressed manner
- 18. lying face downward
- 19. showing determination
Down
- 1. a strong effect
- 2. continuing without any interruption
- 5. extremely important
- 7. mental or physical pain
- 8. lacking conscious
- 10. putting up with something unpleasant
- 12. only concerned about yourself
- 14. drop steeply
- 15. against the law
- 16. very urgent
- 17. displaying affection