full-face

The compound "full-face" is a transparent combination of two native English elements. "Full" descends from the Proto-Germanic fullaz, a concept of completeness with deep Proto-Indo-European roots in pl̥h₁nós. "Face" entered English via Old French from Latin faciēs, which originally meant "form" or "appearance." The logic of the compound is entirely literal: "full" modifies "face" to specify coverage or orientation involving the entire front of the head. This literal sense evolved into specific modern applications, such as describing protective gear (a full-face helmet) or a direct, confronting manner (meeting something full-face).

Structure: full (complete) + face (front of the head) - full: From Old English full, meaning "complete, entire." It functions as an intensifier or descriptor indicating totality. - face: From Old French face, ultimately from Latin faciēs, meaning "form, appearance, front of the head." It functions as the core noun denoting the specific body part.