ADD

[verb] - to put (something) with something else to increase the number or amount or to improve the wholeBeat the butter and sugar together and slowly add the eggs. [T]She's added a Picasso to her collection. [T]Her presence added a much needed sparkle to the occasion. [T]Wasteful packaging can add several pence to the price of food. [T]Her colleagues' laughter only added to (= increased) her embarrassment. [I]She was sad, she said, but added (= said also) that she felt she had made the right decision. [+ that clause]Have you anything to add to your earlier statement? [I]"Oh, and thank you for all your help!" he added as he was leaving. [+ speech]It's $45 - $50 if you add in (= include) the cost of postage. [T]We added an extension on/added on an extension at the back of the house. [M]Don't forget to add on your travelling expenses/add your expenses on. [M]If you add (= calculate the total of) three and four you get seven. (3 + 4 = 7) [T]I'm not very good at adding up! (= calculating the total of different numbers) [I]She added up the bill/added the bill up. [M]The various building programmes add up to (= give a total of, result in) several thousand new homes. [I]We thought we'd bought lots of food, but it didn't add up to much (= did not seem to be a great amount) when we'd spread it out on the table. [I]Their proposals do not add up to (= mean) any real help for the poor.It all added up to (= resulted in) a lot of hard work for all of us.(informal) Why would she disappear the day before her holiday? It just doesn't add up. (= There is no reasonable explanation for it.)They told me I was too old for the job, and then to add insult to injury (= to make a bad situation worse) they refused to pay my expenses!An add-on is a piece of equipment which can be connected to a computer to give it an extra use.A modem is a useful add-on.