After decades of experimentation, she finally produced several magnum opuses that critics hailed as her defining achievements.

The museum's exhibit featured several rare opuses that had never been displayed together.

She published a brief opusculum on the history of local folk songs.

She dismissed the pamphlet as an opuscule, unworthy of serious attention.

The professor recommended several obscure opuscles for the seminar's reading list.

The scholar carefully cataloged an obscure opuscle that had been overlooked for centuries.