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 . If you're serious about vocabulary , we'll show you how to learn it . I'm Finn and I'm Alice . In today's show , we're going to look at a very interesting area of vocabulary prefixes . We'll look at what they are , what they mean and how to use them . be a quiz and we'll leave you with a top tip for learning vocabulary . But before all that , we're going to hear from Dave . He's just got back from lunch , but he isn't happy . Now a question to think about while you listen . What was the problem with Dave's food and what was the problem with Dave's food ? Let's find out . I just tried the new seafood restaurant , and I wish I hadn't , it was intolerable to start with , my seat was really uncomfortable . I had no room to move and the menu was very misleading . The photos look nothing like the actual food . When my food came , it was uncooked . I told the waiter , but he disagreed . He said it was fine . He said he'd eat it himself . And I looked in the kitchen . It was really unhygienic . There was food all over the floor . It was a disgrace . So Dave's pretty unhappy . And what was wrong with his food ? Well , he said that it was uncooked , it was cold and raw because it hadn't been cooked . Not very nice . Well done if you got that right at home . Now , Uncooked is an example of the vocabulary area we're looking at today . Prefixes . Yes . Prefixes or as some people say , prefixes , prefixes , prefixes . A prefix is a small part of a word , usually just a couple of letters that we put at the front of a base word to change its meaning . For example , the prefix un spelt U n is added to happy to make unhappy , which means not happy . And Dave was unhappy about the restaurant . And yes , he said the seats were uncomfortable , meaning not comfortable , and the kitchen was unhygienic , meaning unclean , not clean . Yeah , that's un meaning not . And all today's prefixes have the meaning of not . So Dave said the meal was intolerable . Intolerable in spelt I n is another prefix that can mean not and poor Dave couldn't tolerate the meal . No . Now let's listen to a bit more of Dave . I told the waiter but he disagreed . He said it was fine . The waiter disagreed with him about the food . The prefix dis spelt the means not or to do the opposite . Like disagree to not agree . Yes . And Dave said it was a disgrace . They should be ashamed of it . Let's hear today's prefixes again . Okay , so the first one was an unhappy , uncooked , unhygienic , unclean in intolerable , inexpensive . This disagree disgrace , listening to BBC Learning English dotcom , and it's time for a quiz , try to work out the word that finishes the sentence ready . Number one , the advert said that the phone was five pounds a month , but it didn't say anything about the 50 pound set up fee . It was very A , unhappy in expensive or C , misleading . The advert made people believe something that isn't true , so it was very misleading . Now , number two , this letter has come to the wrong house . There's been a mistake , B , disgrace or C , disagreement . It's not correct , so a mistake . Yep , well done if you got those right . And that brings us almost to the end of today's program . Before we go , here's a top tip for learning vocabulary . If you look up some of today's words in a dictionary , you'll find lots more words , starting with the same prefixes . Many of them may be words that you already knew without the prefix . So when you add a prefix , you get two words for the price of one . That's brilliant . Sounds like a good way to quickly double your vocabulary . Very good , isn't it ? There's more about this at BBC Learning English Dotcom . Join us again for more six minute vocabulary by . But . Whether it's your first step on the property ladder or your first place with stairs from new bills to rebuild a new home is one of life's biggest moments . And we all know life doesn't always go to plan . That's why I think of Ireland . Our personalized mortgages can change if your life changes when you were ready to make a move . We're ready to make it with you . Bank of Ireland begin lending criteria , terms and conditions apply over only mortgage approvals subject to assessment of suitability and affordability . Bank of Ireland mortgage bank trading with Bank of Ireland mortgages is regulated by the Central Bank of Ireland .