| rigid(adjective, mean, hard, determined, usual) |
| determined(adjective, usual, regular, resolute, rigid) |
| intransigent(adjective, determined, resolute, persistent, constant) |
| resolute(adjective, determined, usual, regular, rigid) |
| stubborn(adjective, mean, hard, determined, usual) |
| uncompromising(adjective, mean, hard, determined, resolute) |
| insistent(adjective, determined, resolute, uncompromising, unshakeable) |
| firm(adjective, mean, hard, determined, usual) |
| fixed(adjective, mean, hard, determined, usual) |
| hard-nosed(adjective, mean, hard, determined, resolute) |
| immovable(adjective, mean, hard, determined, usual) |
| inexorable(adjective, mean, hard, determined, resolute) |
| inflexible(adjective, mean, hard, determined, resolute) |
| obdurate(adjective, determined, resolute, stubborn, uncompromising) |
| relentless(adjective, mean, hard, determined, resolute) |
| set(adjective, determined, usual, resolute, rigid) |
| set in stone(expression, adjective, idiom, mean, hard) |
| unbending(adjective, mean, hard, determined, resolute) |
| unrelenting(adjective, mean, hard, determined, resolute) |
| unshakable(adjective, mean, hard, determined, resolute) |