| inflexible(adjective, set, hard, stiff, rigid) |
| rigid(adjective, set, hard, stiff, resolute) |
| stubborn(adjective, change, position, attitude, determination) |
| obstinate(adjective, set, hard, stiff, rigid) |
| adamant(adjective, hard, resolute, rigid, inflexible) |
| determined(adjective, hard, resolute, rigid, inflexible) |
| fixed(adjective, set, hard, stiff, rigid) |
| resolute(adjective, hard, rigid, inflexible, strict) |
| unbending(adjective, hard, rigid, inflexible, strict) |
| uncompliant(adjective, set, hard, stiff, rigid) |
| uncompromising(adjective, set, hard, stiff, rigid) |
| adamantine(adjective, hard, resolute, rigid, inflexible) |
| dogged(adjective, set, hard, stiff, rigid) |
| firm(adjective, hard, rigid, inflexible, strict) |
| hard(adjective, set, stiff, resolute, rigid) |
| immovable(adjective, hard, rigid, inflexible, strict) |
| immutable(adjective, set, hard, stiff, rigid) |
| inelastic(adjective, unflexible) |
| intractable(adjective, set, hard, stiff, rigid) |
| obdurate(adjective, hard, resolute, rigid, inflexible) |