Lewis Short
(adjective) : per-bŏnus, a, um
* Very good: prandium,Plaut. Most. 3, 2, 3: eam sei curabeis, perbona'st,id. Merc. 3, 1, 28: ager,Cic. Fl. 29, 71: toreumata,Cic. Verr. 2, 4, 18, § 38: perbono loco res erat,id. Att. 6, 1, 3.
Charlton T. Lewis, Charles Short, A Latin Dictionary