Lewis Short
(adjective) : per-nĭmĭus, a, um
* Quite too great, altogether too much: nimium inter vos ac pernimium interest,Ter. Ad. 3, 3, 39; in tmesi: per parce nimium,id. And. 2, 6, 24.—Adv.: pernĭmĭum, altogether too much: interpretatio pernimium severa,altogether too severe,Dig. 48, 3, 2.
Charlton T. Lewis, Charles Short, A Latin Dictionary