vaticinatio
From LSJ
λέγεις, ἃ δὲ λέγεις ἕνεκα τοῦ λαβεῖν λέγεις → you speak, but you say what you say for the sake of gain (Menander, fr. 776)
Latin > English (Lewis & Short)
vātĭcĭnātĭo: ōnis, f. vaticinor,
I a foretelling, soothsaying, prophesying; a prediction, vaticination, Cic. N. D. 2, 3, 10; id. Att. 8, 12, 1; Caes. B. G. 1, 50; Val. Max. 1, 8, 10; Suet. Caes. 59; Plin. Ep. 6, 20, 19.