Smear comes from Old English smerian, smierwan ('to anoint, smear with grease'), from the noun smeoru ('fat, grease'), from Proto-Germanic *smerwą, from Proto-Indo-European *smeru- ('grease, fat'). The historical chain includes Old English smeoru, Proto-Germanic *smerwą, and Proto-Indo-European *smeru-. Older glosses in the chain include "to anoint, smear with grease", "fat, grease", and "grease, fat", which help explain the semantic range of the modern word. Morphologically, smear is best read as borrowing, yielding an English verb and noun shaped by both form history and later usage. In current English it functions as a verb and noun, with the sense "to spread a substance messily; to slander someone". English derivatives include smeary, smearer, and smeariness. The result is an English verb and noun whose etymology preserves the older forms while supporting the word's specialized modern meaning.