Read the dictionary definition of less. All definitions for this word.
1. (comparative of `little' usually used with mass nouns) a quantifier meaning not as great in amount or degree
1. of less importance
2. less time to spend with the family
3. a shower uses less water
4. less than three years old
2. (nonstandard in some uses but often idiomatic with measure phrases) fewer
1. less than three weeks
2. no less than 50 people attended
3. in 25 words or less
3. (usually preceded by `no') lower in quality
1. no less than perfect
4. used to form the comparative of some adjectives and adverbs
1. less interesting
2. less expensive
3. less quickly
5. comparative of little
1. she walks less than she should
2. he works less these days
