half-crazed

The adjective "half-crazed" is a transparent English compound formed from two native elements. The first element, "half," is a foundational Germanic word from Old English, retaining its core sense of "partial" or "incomplete." The second element, "crazed," derives from the verb "craze," which entered Middle English from Old Norse with the sense of "to shatter" or "break," a meaning that evolved metaphorically to describe a shattered or unsound state of mind. The compound logically combines these ideas to describe someone not fully insane but exhibiting significant signs of wild, irrational, or shattered thinking, effectively capturing a state of partial madness.

Structure: half (partial) + crazed (insane) - half: From Old English healf, meaning "side, part". In this compound, it functions as a prefix indicating partiality or incompleteness. - crazed: From the verb craze, meaning "to make insane", plus the past participle suffix -ed. Craze itself originates from a Scandinavian source, related to Old Norse krasa meaning "to shatter".