| brawny(adjective, strong, hard, solid, stiff) |
| capacity(noun, strength, ability, resolution, fortitude) |
| check(support, opposition, resistance, fighting, impermeability) |
| checking(alert, watchful, opposing, defending, protective) |
| cohesive(adjective, strong, hard, solid, stiff) |
| conditioned(adjective, strong, hard, solid, stiff) |
| continuance(noun, strength, resolution, fortitude, stamina) |
| continuation(noun, strength, resolution, fortitude, stamina) |
| continuing(noun, strength, ability, resolution, capacity) |
| continuity(noun, strength, resolution, fortitude, stamina) |
| cool(noun, strength, ability, resolution, capacity) |
| coolness(noun, strength, ability, resolution, capacity) |
| coping with(expression, adjective, watchful, opposing, protective) |
| defend |
| defender |
| defiant |
| defy |
| dense(adjective, strong, hard, solid, stiff) |
| difficult |
| duration(noun, strength, resolution, fortitude, stamina) |