Across

3. Having great power or influence
4. Great physical strength or power
7. Large and strong; heavily built
8. Courage and resolve; strength of character
9. Physical strength and good health
12. Impossible to overcome
14. The capacity to recover quickly from difficulties; toughness
17. Strong and thick; brave and determined
20. A piece of tough fibrous tissue uniting muscle to bone; strength or resilience
21. The ability to do something or act in a particular way
22. Great courage in the face of danger, especially in battle
23. Persistent determination

Down

1. The practice of training people to obey rules or a code of behavior
2. Control exerted to do something or restrain impulses
5. Strong enough to withstand adverse conditions or rough handling
6. Loyal, reliable, and hardworking
10. Steadfastness in doing something despite difficulty or delay in achieving success
11. The quality of being able to grip something firmly; persistence
13. Physical strength in contrast to intelligence
15. Impossible to subdue or defeat
16. Most important, powerful, or influential
18. Muscular strength
19. Having great power, influence, or effect