Lewis Short
ŏpĕrōsĭtas (noun F) : operosus
* Excessive pains, overmuch nicety, elaborate workmanship (post-Aug.): est etiam, quae περιεργία vocatur, supervacua, ut sic dixerim, operositas, Quint. 8, 3, 55: operositas suadendi,Tert. Anim. 2 fin.: vitreorum,Vop. Tac. 11.
Charlton T. Lewis, Charles Short, A Latin Dictionary