Can we say "Most Legendariest"? [duplicate]
Solution 1:
Typically, the suffix “est” replaces the word “most” just like “er” replaces “more”. They are not used together. Some people may use it in a nonsensical or ungrammatical way for humorous emphasis. But, most native English speakers will count such a phrase as facetious hyperbole.
For example:
That 600 pound woman is the absolute very most fattest person that I have ever seen in my entire life.
Plus, I don’t think legendariest is an official English word. If it is, it is unnatural to hear and speak. And, it has fallen out of common usage.