less     
 Adj [menos] little, less, least

~ N ~ activity, ~ aggression, ~ attention
  Less attention was paid to other phenomena.

 Adv [menos] little, less, least

~ Adj ~ able, ~ abundant, ~ accessible, ~ active, ~ aggressive, ~ attractive, ~ available, ~ bright, ~ capable, ~ clear, ~ common, ~ complex, ~ consistent, ~ effective, ~ frequent, ~ likely, ~ sensitive, ~ similar, ~ stable, ~ stressful, ~ suitable
  Its effects were less clear in the long run. | Outbreaks were less frequent than would have been expected. | Some animals are less likely to reproduce.

~ Adv ~ frequently, ~ often
  According to some studies, boys cry less often than girls.

Adv ~ much ~
  These medicines were much less effective at higher doses.

V ~ know ~, understand ~
  Much less is known about these proteins.

little, least