per-longus

a, um, adj.
I. very long.
I. Lit.: via, Cic. Att. 5, 20, 8: perlongum. adverb., for a very long time, very long, Aus. Epigr. 1, 7.—
II. Transf., very tedious, Plaut. Trin. 3, 3, 17.—Adv.: perlongē, a very long way off, very far: perlonge est, Ter. Eun. 3, 5, 61.
Lewis & Short
A Latin Dictionary, 1879
An open-access project