The smallest in amount, size, degree, or importance. It can also mean the lowest possible level of something.
From Old English *lǣst* meaning “smallest or last,” related to *less*. It is the superlative form of “little” in older English patterns.
‘Least’ is the hidden extreme of ‘little’: little → less → least. Whenever you see ‘at least,’ you’re setting a minimum floor, not a wish—many learners mix that up.
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