The story
- Ancient GreekΣιλίγγαι (Silíngai)
- LatinSilingaeder.?
- Old PolishŚlęża
- Old PolishŚlęzader.?
- Old Polishśląg /ślęgder.?
- Late LatinSilesia
- EnglishSilesia
- Englishsilesia?
- Englishsleazybf.
- English todaysleaze
Back-formation from sleazy, originally used to describe the thinness and low quality of cloth.
Etymology from Wiktionary, CC BY-SA 4.0.