As Stan will tell you, I can't pronounce English - or, at least, I have an "odd" accent ! So, perhaps, "mndele" would be a better way to write it - leaving the initial vowel sound up for grabs.
However, since it seems both of us are easily launched on insatiable quests for knowledge (not a bad thing), I've now looked at a couple of Lingala online translators - note that I was using the word in the plural ("a bunch of mindele" and "the mindele colonialists") - and here we go:
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