| stationary(adjective, calm, strong, solid, steady) |
| staunch(adjective, calm, strong, solid, steady) |
| stay in place |
| stay put(verb, expression, fasten, attach, live) |
| steadfast(adjective, calm, strong, solid, steady) |
| steady(verb, adjective, calm, strong, secure) |
| stop |
| stout(adjective, calm, strong, solid, steady) |
| sturdy(adjective, calm, strong, solid, steady) |
| substantial(adjective, calm, strong, solid, steady) |
| sure(adjective, calm, strong, solid, steady) |
| together(adjective, calm, strong, solid, steady) |
| tough(adjective, calm, strong, solid, steady) |
| unalterable(adjective, calm, strong, solid, steady) |
| unchangeable(adjective, calm, strong, solid, steady) |
| unfluctuating(adjective, calm, strong, solid, steady) |
| uniform(adjective, calm, strong, solid, steady) |
| unvarying(adjective, calm, strong, solid, steady) |
| unwavering(adjective, calm, strong, solid, steady) |
| well-built(adjective, calm, strong, solid, steady) |