This is the BBC . This podcast is supported by advertising outside the . This is a download from BBC Learning English to find out more , visit our website , six minutes from BBC Learning English dot com . Hello and welcome to Six Minute Vocabulary . I'm Neal and I'm . In this program , we're looking at three prefixes , spelled D spelt D y . S and dis spelled D prefixes or prefixes , as some people say , are two or three letters that go at the beginning of a word and affect its meaning . We'll look at what each prefix means and give you example sentences . There'll be a quiz and we'll leave you with a top tip for learning vocabulary . But first , let's listen to Gladis talking about her husband . But while you listen , think about this question . Does Gladis agree with ? dyspepsia as indigestion is quite bad at the moment . It's causing him quite a bit of discomfort . The doctor says it's because he eats too much fatty food . She says the symptoms would disappear if Bert went on a detox diet . No disrespect to the doctor , but I disagree . I think it's caused by stress . So we asked you , does Gladys agree with the doctor ? And the answer is no , she disagrees . Gladys thinks her husband's indigestion is caused by stress , but the doctor thinks it's due to a bad diet . Disagree is the key word because it has the prefix dis spelt d i . S this means not so . By adding death , we can turn a word into its opposite . So disagree means not to agree and disrespect means not having respect . Gladys says no disrespect to the doctor , meaning she doesn't want people to think she doesn't respect what the doctor says . Let's hear another clip from Gladys with more prefixes . But dyspepsia or indigestion is quite bad at the moment . It's causing him quite a bit of discomfort . So we had discomfort . If you know what the word comfort means , then you can work out what discomfort means . Death plus comfort gives us the opposite of comfort . feeling uncomfortable . And in the clip we heard the word dyspepsia . Now that's the medical word for indigestion . When your stomach feels very full and uncomfortable after you eat , this word starts with the prefix dis . But this time it's spelt d . Y . S . This prefix is less common than dis spelt , but it also has a negative meaning . It has the idea of being bad or abnormal . So dyspepsia is a medical condition when your body can't process food in the normal way . Other words , with the prefix dis spelt d . Y s r dyslexia and dysfunctional people who have dyslexia have difficulty with reading and if something is dysfunctional , it doesn't work properly . Let's have another clip with the prefix dis DS will also hear our next prefix . She says the symptoms would disappear if went on a detox diet . So we had disappear . That D plus appear . Yes , and disappear means the opposite of a . We also had the word detox , which starts with the prefix d spelt d yes . The prefix D spelt usually means take away or remove something . So if something is described as a detox detox , it means it takes away toxins or poisons . A detox diet could be one with just fruit and vegetables . I like to detox at the end of the day with a hot bath . Six minutes from the BBC and we're talking about the prefixes dispell , dis spelt S and D spelt d e all these prefixes have a negative meaning and now it's quiz time . Choose the correct word . Number one , one minute the dogs were playing in the garden . The next minute the garden was empty and they'd all A disagreed . B disappeared . C detoxed . Well , the answer to that is B disappeared . No . Two people who drink too much alcohol sometimes go to a clinic for A dyspepsia , B , discomfort , C detox . The answer is C , detox . And number three , my daughter is having problems learning to read . Her teacher thinks she may be A , disrespectful , B , dyslexic , c , dysfunctional . The answer is B , dyslexic . And that's the end of the quiz . Well done . If you've got them right . Yes , well done . And now here's our top tip for learning vocabulary . When you see or hear a new word , see if you can break the word up . If it starts with a prefix that you recognize , it may help you to understand the meaning . There's more about this at BBC Learning English dot com . Join us again for more six minute vocabulary . Bye bye . Oh , six minutes vocabulary from the BBC .