vaticinate /vəˈtɪ.səˌneɪt/ verb1 •(formal) To predict or foretell future events; to prophesy or presage.With a slow step, and tears in her eyes, Mrs. Glentworth, vaticinating trouble of some kind, proceeded to cut the string and break the seal of her pacquet. — 1842 formsvaticinated · vaticinating · vaticinates