patefactio
From LSJ
Ὦ ξεῖν’, ἀγγέλλειν Λακεδαιμονίοις ὅτι τῇδε κείμεθα τοῖς κείνων ῥήμασι πειθόμενοι. → Go tell the Spartans, stranger passing by, that here, obedient to their laws, we lie.
Latin > English (Lewis & Short)
pătĕfactĭo: ōnis, f. patefacio,
I a laying open, disclosing, making known: patefactio quast rerum opertarum, Cic. Fin. 2, 2, 5.