Analogia com o comparative ER - no superlative we employ EST:
The coldEST, the hottEST, the hardEST
Examples:
1- São Joaquim and Lages, both in the Santa Catarina state are the coldEST cities in Brazil;
2- Finding a good hotel might the hardEST part about traveling on holidays;
3- The easiEST way to find a roommate is looking up* on the web not always the best*.
The MOST
The most difficult;
Noronha is the most beautiful place I've ever visited in Brazil.
Math was the most boring subject in high school for me.
1- "The smallEST state of Brazil is Piauí"
2- "Pele is one of Brazil´s most famous football
player"
3- "Lima Duarte is one of the best known* actors
on Brazilian tv"
*Know-knew- known : o verbo “saber”, “conhecer”:
knew=sabia, conhecia;
known = 'sabido', conhecido,
well known. = bem conhecido
the best known = o mais conhecido