| prearranged(adjective, firm, determined, usual, regular) |
| predetermined(adjective, firm, determined, usual, regular) |
| prescribed(adjective, firm, determined, usual, regular) |
| protected |
| regular(adjective, firm, determined, usual, planned) |
| resolute(adjective, firm, determined, usual, regular) |
| resolved(adjective, firm, determined, usual, regular) |
| retrenched |
| rigid(adjective, firm, solid, determined, usual) |
| safe |
| scheduled(adjective, firm, determined, usual, regular) |
| set in stone(expression, adjective, idiom, firm, determined) |
| solid as a rock(expression, adjective, idiom, determined, usual) |
| specified(adjective, firm, determined, usual, regular) |
| standing |
| stated(adjective, firm, determined, usual, regular) |
| steadfast(adjective, firm, determined, usual, regular) |
| stiff-necked(adjective, firm, determined, usual, regular) |
| stipulated(adjective, firm, determined, usual, regular) |
| strengthened |