| perdurable(calm, strong, solid, steady, substantial) |
| permanent(calm, strong, secure, solid, steady) |
| poised(calm, strong, solid, steady, substantial) |
| reliable(calm, strong, solid, steady, substantial) |
| resolute(calm, strong, solid, steady, substantial) |
| rock solid(expression, idiom, stability) |
| rocked(noun, verb, pressured) |
| safe(adjective, calm, strong, secure, firm) |
| safe and sound(expression, adjective, idiom, strong, solid) |
| set in stone(expression, adjective, idiom, calm, strong) |
| shut |
| solid as a rock(expression, adjective, idiom, calm, strong) |
| stabile(adjective, calm, strong, solid, steady) |
| stalwart(calm, strong, solid, steady, substantial) |
| staple |
| stated |
| staunch(adjective, calm, strong, secure, firm) |
| stayed |
| staying put(expression, adjective, calm, strong, substantial) |
| steadfast(calm, strong, secure, solid, steady) |