per-bĕnĕ — Lewis & Short
per-bĕnĕ, adv.,
I very well:
prandi perbene, Potavi,Plaut. Men. 5, 9, 81: pol ego haud a pecuniā perbene, id. Aul. 2, 2, 9:
loqui Latine,Cic. Brut. 28, 108:
Fortunam fecisse, quando, etc.,Liv. 45, 3, 5.