| guarded(adjective, safe, sheltered, protected, locked) |
| immovable(adjective, safe, sheltered, protected, locked) |
| immune(adjective, safe, sheltered, protected, locked) |
| impregnable(adjective, safe, sheltered, protected, locked) |
| iron(adjective, safe, sheltered, protected, locked) |
| locked(adjective, safe, sheltered, protected) |
| nailed(adjective, safe, sheltered, protected, locked) |
| reliable |
| risk-free |
| safe and sound(expression, adjective, idiom, safe, sheltered) |
| set(adjective, safe, sheltered, protected, locked) |
| sheltered(adjective, safe, protected, locked) |
| shielded(adjective, safe, sheltered, protected, locked) |
| solid as a rock(expression, adjective, idiom, safe, sheltered) |
| stable(adjective, safe, sheltered, protected, locked) |
| staunch(adjective, safe, sheltered, protected, locked) |
| steady(adjective, safe, sheltered, protected, locked) |
| strong(adjective, safe, sheltered, protected, locked) |
| tenacious(adjective, safe, sheltered, protected, locked) |
| tight(adjective, safe, sheltered, protected, locked) |