| hard as nails(expression, adjective, idiom, strong, hard) |
| brawny(adjective, strong, hard, solid, stiff) |
| cohesive(adjective, strong, hard, solid, stiff) |
| conditioned(adjective, strong, hard, solid, stiff) |
| dense(adjective, strong, hard, solid, stiff) |
| fibrous(adjective, strong, hard, solid, stiff) |
| fit(adjective, strong, hard, solid, stiff) |
| flinty(adjective, strong, hard, solid, stiff) |
| hard-bitten(adjective, strong, hard, solid, stiff) |
| indigestible(adjective, strong, hard, solid, stiff) |
| leathery(adjective, strong, hard, solid, stiff) |
| lusty(adjective, strong, hard, solid, stiff) |
| molded(adjective, strong, hard, solid, stiff) |
| resilient(adjective, strong, hard, solid, stiff) |
| resistant(adjective, strong, hard, solid, stiff) |
| rigid(adjective, strong, hard, solid, stiff) |
| seasoned(adjective, strong, hard, solid, stiff) |
| steeled(adjective, strong, hard, solid, stiff) |
| stiff(adjective, strong, hard, solid, sturdy) |
| strong(adjective, hard, solid, stiff, sturdy) |