Where did you get your username from?

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Wouldn't Ashra be more accurate for ten in Arabic? I mean, I pronounce Ashura "a-shoo-rah", while Ashra would be "ash-rah", which is what I think is closer to the Arabic word. Then again, if you pronounce Ashura quick enough, it does sound like Ashra.
I'm talking about Egyptian Arabic though, Middle Eastern Arabic (UAE and whatnot) might be different.

That's a common romanization problem. Another example would be "Sasuke" (Naruto" which is actually pronounced more like "Soske" (but due to how it is written, many synchronizations do it all wrong).