fatiloquent
prophetic; speaking of fate.
He paused, adopting a pensive mien which befitted this fatiloquent observation, and I was transfixed by the thick, almost Neanderthal ridges of bone that took the place of eyebrows on his mondial head.
Where it comes from
From Latin fatiloquus, from fatum (“fate”) + ultimately loqui (“speak”) (modeled on eloquent and other such words).
Adapted from the Wiktionary entry fatiloquent (CC BY-SA 4.0).