The most unkind, cruel, or unfriendly; or the most humble, poor, or inferior.
Meanest is the superlative form of 'mean,' which comes from Old English 'mæne' meaning 'common' or 'shared.' It evolved into meanings of both 'unkind' and 'humble/lowly,' with superlatives naturally following the same pattern.
The word 'mean' is fascinating because it has two opposite meanings—'unkind' and 'humble/poor'—and both came from the same root, showing how a word's meaning can split in completely different directions over time.
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