| Nominativ | operosus, operosa, operosaeque, operosum | operosiores, operosa, operosi, operosae, operosiora, operosaeque |
| Genitiv | operosiores, operosi, operosae, operosi, operosiora, operosiora, operosiores | operosarum, operosorum, operosorum |
| Dativ | operoso, operoso, operosae | operosis, operosissime |
| Akkusativ | operosum, operosum, operosam | operosaeque, operosas, operosa, operosos |
| Ablativ | operosa, operoso, operoso, operosaeque | operosis, operosissime |
| Vokativ | operosa, operose, operosaeque, operosum | operosaeque, operosiores, operosa, operosi, operosae, operosiora |
