less
adjective
(comparative of `little' usually used with mass nouns) a quantifier meaning not as great in amount or degree
“of less importance”
“less time to spend with the family”
Oppositesmore(usually preceded by `no') lower in quality
“no less than perfect”
(nonstandard in some uses but often idiomatic with measure phrases) fewer
“less than three weeks”
“no less than 50 people attended”
adverb
used to form the comparative of some adjectives and adverbs
“less interesting”
“less expensive”
Synonymsto a lesser extentOppositesmorecomparative of little
“she walks less than she should”
“he works less these days”
Oppositesmore
Source: WordNet 3.1, Princeton University