1less 
/ˈlɛs/ adjective
comparative form of 1little /ˈlɛs/ adjective : not so much : smaller in amount or number
▪ We need less talk and more work! ▪ She finished in less time than I did. ▪ Less detail is sometimes better than more detail. ▪ 8 times 2 is less than 6 times 3. ▪ We made it there in less than six hours. ▪ The whole procedure takes less than five minutes. ▪ The illness affects less than one percent of the population.
▪ We need less talk and more work! ▪ She finished in less time than I did. ▪ Less detail is sometimes better than more detail. ▪ 8 times 2 is less than 6 times 3. ▪ We made it there in less than six hours. ▪ The whole procedure takes less than five minutes. ▪ The illness affects less than one percent of the population.
no less
— used to suggest that something is surprising or impressive ▪ He insists on being driven to the airport, and in a limousine no less! [=it is surprising that he insists on being driven in a limousine] ▪ She was contacted by the president, no less! ▪ The plan was approved by no less (of) an authority than the president himself.
no less than
: at least — used to suggest that a number or amount is surprisingly large ▪ No less than half the students failed the test. ▪ She has had no less than [=no fewer than] a dozen job offers.
usage The adjectives less and fewer have similar meanings but are used in slightly different ways. Fewer is used with nouns that can be counted.
▪ classrooms with fewer students ▪ They have fewer than three children. Less is usually used with nouns that cannot be counted. ▪ He makes less money than she does. ▪ The new model uses less power. But less is also more likely than fewer to be used with count nouns that refer to distances and amounts of money. ▪ an investment of less than $2,000 ▪ It's less than 100 miles away. Less is also used in mathematical expressions and in certain phrases. ▪ an angle of less than 180 degrees ▪ Write it in 25 words or less. It is also used instead of fewer with other sorts of plural nouns, although many people still consider this use incorrect. ▪ Less than 10 people showed up. = Fewer than 10 people showed up.
▪ classrooms with fewer students ▪ They have fewer than three children. Less is usually used with nouns that cannot be counted. ▪ He makes less money than she does. ▪ The new model uses less power. But less is also more likely than fewer to be used with count nouns that refer to distances and amounts of money. ▪ an investment of less than $2,000 ▪ It's less than 100 miles away. Less is also used in mathematical expressions and in certain phrases. ▪ an angle of less than 180 degrees ▪ Write it in 25 words or less. It is also used instead of fewer with other sorts of plural nouns, although many people still consider this use incorrect. ▪ Less than 10 people showed up. = Fewer than 10 people showed up.
