What this suffix does
-clad forms compound adjectives that describe being covered, clothed, or encased in a specified material. Armour-clad, ivy-clad, snow-clad, iron-clad, scantily clad — each compound creates a visual image of something wrapped, protected, or adorned by a substance. "-clad" is deeply literary and poetic, rooted in Old English and Germanic traditions where "clad" (from "clothe") applied to anything from armour to vegetation. It persists most strongly in poetry, high-register prose, nature writing, and historical narrative. In everyday speech it survives mainly in "ironclad" and "scantily clad".