Rub
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Inherited from Middle English rubben; possibly ultimately from Proto-Germanic *rubbōną, related to *reufaną (“to tear”).
Cognate with Saterland Frisian rubje (“to rub, scrape”), German Low German rubben (“to rub”), Low German rubblig (“rough, uneven”), Dutch robben, rubben (“to rub smooth; scrape; scrub”), Danish rubbe (“to rub, scrub”), Icelandic and Norwegian rubba (“to scrape”).[1] More at reave.
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The root hamza rā bā (أ ر ب)