Most is what is called a determiner. A determiner is "a word, such as a number, article, personal pronoun, that determines (limits) the meaning of a noun phrase." Some determiners can only be used with either a countable noun or an uncountable noun, while others, like most, can be used with both countable and uncountable nouns. Uncountable nouns usually take a singular verb. So, in your ...
Most favorite and least favorite are both commonly used by native speakers. The way favorite and unique are used by people who have better things to do than worry about the minutiae of grammar is closer to a hyperbole than a logical statement about something.
Since "most of _____" is a prepositional phrase, the correct usage would be "most of whom." The phrase "most of who" should probably never be used. Another way to think about the difference between the subjective/objective pronouns is to revise the sentence to include a personal pronoun and see which form (he/him or she/her or they/them) fit.
I've recently come across a novel called A most wanted man, after which being curious I found a TV episode called A most unusual camera. Could someone shed some light on how to use "a most" and wh...
superlative degree - How/when does one use "a most"? - English Language ...
Most is vs most are - English Language & Usage Stack Exchange
Which of the following two sentences is more correct? "A picture says a thousand words, more importantly in a fraction of a second" OR "A picture says a thousand words, most importantly in a fract...