Learn the most common English prefixes with this English vocabulary lesson. Some prefixes have more than one meaning or use. The most common ones are explained in this video class with several examples.A prefix is a group of letters at the beginning of a word. It indicates part of the meaning of the whole word.If you know the most common prefixes, it will help to deduce the meaning of new words.Example "dis" = notI dislike him = I do not like him.Sometimes there is a hyphen ( - ) between the prefix and the rest of the word. Example: anti-warBe careful. Sometimes what looks like a prefix is not a prefix and the meaning is quite different. Example: “distant”Use a good dictionary to check the meaning of all new vocabulary and to see the full list of all the English prefixes.