frail-looking

The compound adjective "frail-looking" is a relatively modern English formation that transparently combines two established elements. The first element, "frail," traces its lineage back to the Latin fragilis, meaning "easily broken," which itself derives from the verb frangere, "to break." This etymological connection underscores the core sense of physical vulnerability. The second element, "-looking," originates from the Old English verb lōcian, meaning "to see," and functions as a participial adjective suffix, a productive pattern in English (e.g., "good-looking," "tired-looking"). The logic of the word is direct and descriptive: it denotes someone or something that appears to possess the qualities of fragility and weakness inherent in the root "frail."

Structure: frail (physically weak) + looking (appearing) frail: From Middle English, from Old French fraile, frele, from Latin fragilis (breakable). Functional role: Adjective root conveying the core meaning of weakness or fragility. looking: From Old English lōcian (to see, gaze). Functional role: Present participle suffix -ing attached to the verb look, forming a compound adjective meaning "having the appearance of".