I don't think I've ever come across the word "moorish" ever in the UK, boggy would be what we'd use instead. Regardless of that I'm pretty sure that the stress

I don't think I've ever come across the word "moorish" ever in the UK, boggy would be what we'd use instead. Regardless of that I'm pretty sure that the stress for moreish is on the ish (often with a very slight pause beforehand as in more-ish), whereas the stress for moorish would be on the moor, so you'd be able to tell the difference even with accents where "more" and "moor" sound the same.