- least
- 1
/li:st/ determiner,
pronoun
1 at leasta) not less than a particular number or amount: It will take you at least 20 minutes to get there. | He had been dead for at least a fortnight. | at the very least (=not less than and probably much more than): It would cost $1 million at the very least.b) at least even if nothing else is true, or even if nothing else happens: I think you should at least consider his offer. | Well, at least I don't spend all my money on drink like some people.c) used when you are mentioning an advantage that makes certain problems or disadvantages seem less serious: At least he was safe now. | The film wasn't very interesting, but at least it filled the time.d) used when you are correcting or changing something that you have just said: Mary was depressed all evening. Or at least it seemed that way. | She has no plans to return to England yet, at least as far as I know.2 the smallest in number, amount, or importance: It's not always wise to buy the one that costs the least. | Those with the least money pay the least in taxes.3 not the least/not in the least/not the least bit none at all, or not at all: It doesn't matter in the least if you're a bit late. | She didn't seem the least bit worried. | He came up without the least hesitation and asked me what I was doing there.4 the least sb could do used when saying what you think someone should or could do to help someone else: The least he could do is give them some money towards the rent.5 to say the least used to show that something is worse or more serious than you are actually saying: He was rather offended, to say the least.6 the least of your worries something you are not worried about because there are other more important problems: Deciding what to wear for the trial is the least of my worries.2 adverb1 less than anything or anyone else: It happened when we least expected it. | He was the least experienced of the teachers | The tax hits those who can least afford it.2 least of all especially not a particular person: No one knew where he was, least of all his family.3 not least formal especially: The president's speeches were alarming, not least to the country's allies.
Longman dictionary of contemporary English. 2004.