Moran

I think I've seen this as a surname before. Not very common, though.

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And actually, one of my middle school teachers was named Moran. I know how it's pronounced. But still, looks too close to "moron." If you live in an English-speaking country, wouldn't recommend it. She told us that she always hated the name because it indeed caused classmates and friends to bully her as a "moron."

Not acceptable in the United States, as it sounds like "moron."