From Longman Dictionary of Contemporary Englishthe leastthe leasta) the smallest amount Women work in those sectors of the job market which pay the least. Which method causes the least damage to the environment? b) used to emphasize how small something is, especially when it hardly exists at all I haven’t the least idea what you are talking about. He used to wake at the least noise. c) used when you are saying what someone should do in a situation, and suggesting that they should really do more The least you could do is give me her phone number. The least they could have given her is some money towards the rent. → least