vaticinate
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.
Where it comes from
From Latin vāticinātus, perfect passive participle of vāticinor (“foretell, prophesy”).
Adapted from the Wiktionary entry vaticinate (CC BY-SA 4.0).