effutio
From LSJ
Latin > English (Lewis & Short)
ef-fūtĭo: no
I perf., ītum, 4, v. a. FVTIO, acc. to Prisc. p. 631 P., to blab out, babble forth, to prate, chatter, utter (class.): multa ore, Lucr. 5, 910; so, aliquid, Cic. N. D. 1, 30, 84; * Hor. A. P. 231; Gell. 5, 1; cf.: effutita temere (vaticinia), Cic. Div. 2, 55, 113: de mundo, id. N. D. 2, 37, 94.—
II Absol.
(a) To blab, tell secrets: eo perperam olim dixi, ne vos foris effutiretis; and absol., Ter. Ph. 5, 1, 19.—
(b) To talk idly: ex tempore, Cic. Tusc. 5, 31, 88.