Prefixes are groups of letters that are added to the start of words to change their meaning. Root words are the basic words that are used to form other words. Root words haven't had any prefixes ...

But there are no hard and fast patterns. All this is somewhat strange, because usually when we add a prefix such as in- or un- or dis- to the beginning of adjectives, adverbs and verbs ...

Prefixes are groups of letters that are added to the start of words to change their meaning. Watch this clip to learn more about prefixes. Remember: 'Root words' are the basic words that are used ...