Lewis Short
(adverb) : prō-pălam
* Openly, publicly, notoriously, manifestly (class.): minus jam furtificus sum: rapio propalam,Plaut. Ep. 1, 1, 10: signis propalam collocatis, * Cic. de Or. 1, 35, 161: dicere,Liv. 34, 33: obviam ire,id. 3, 25: alii propalam, alii per occultum,Tac. A. 6, 7: propalam aspici,id. ib. 2, 39: timeo, ne hoc propalam fiat,may become manifest,Plaut. Mil. 4, 8, 38: propalam est, it is clear, manifest (post-class.), Ter. Maur. p. 2435 P.
Charlton T. Lewis, Charles Short, A Latin Dictionary