Webster's Revised Unabridged Dictionary · 1913

Foreshow

Foreshow , transitive verb

[Anglo-Saxon foresceáwian to foresee, provide; fore + sceáwian to see. See Show, transitive verb]

To show or exhibit beforehand; to give foreknowledge of; to prognosticate; to foretell.
Your looks foreshow You have a gentle heart. — Shakespeare
Next, like Aurora, Spenser rose, Whose purple blush the day foreshows. — Denham