Lewis Short
(adjective) : illăbōrātus (inl-), a, um, in-laboratus
* Not labored, unwrought, uncultivated, acquired without labor, spontaneous (post-Aug.): terra,Sen. Ep. 90 fin.: fructus,Quint. 12, 10, 79: oratio (with simplex),id. 4, 1, 60: virtus (with obvia),id. 12, 2, 2: haec omnia fluunt illaborata,id. 10, 1, 111.
Charlton T. Lewis, Charles Short, A Latin Dictionary