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