Most-Most-Of | Commonly Confused Words

Most of

/moʊst əv/

Referring to the greatest quantity or number of something in a group or set

This word has no synonyms

This word has no antonyms

/məʊst/

Surpassing all others in extent or degree

"It is a most repulsive quality, indeed," said he.Pay most attention, dear, to noble Banquo.The mechanism of this cigarette is most ingenious.

Most is a superlative adjective on its own, indicating the greatest amount or degree.
Most of is used to refer to the majority of something specific, usually followed by a noun or pronoun.
Most can stand alone, while most of requires a completion to the phrase.
Use most when you want to make a general statement.
Use most of when specifying a particular group or portion.