Across
- 4. deep, clear, impactful
- 7. fierce, raging
- 8. elated, exstatic
- 10. flawless
- 11. alpinism, climbing
- 14. uneasy
- 15. endurance, lastingness, durability
Down
- 1. expecting trouble or bad outcomes
- 2. slight, slim, doubtful
- 3. equivocal, unconvincing
- 5. challenging, arduous
- 6. resounding
- 9. dreadful, terrible, dire
- 10. complex, elaborate
- 12. pressing, immediate
- 13. legendary, renowned