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 ...

Prefixes are a group of letters which change a words meaning when they’re added to the start. Hang on a minute… Are you tidying up? Nice job, looking tidy. That ...

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 ...