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English definition of “at least”

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at least

A2 as much as, or more than, a number or amount: It will cost at least $100. It will be £200 at the very least. You'll have to wait at least an hour. B2 used to reduce the effect of a statement: I've met the president - at least, he shook my hand once.
See also
B1 used to emphasize that something is good in a bad situation: It's a small house but at least there's a garden. B1 used to say that someone should do something small, even if they do nothing else: Even if she didn't want to send a present, she could at least have sent a card.
(Definition of at least from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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