up [phrasal verb] [M] - to express all the most important facts or characteristics about (something) in a brief wayThe purpose of a conclusion is to sum up the main points of the essay. [M]The best way of summing the situation up in our office is 'absolute chaos'. [M]The government's policy under the present leader is easy to sum up - there isn't any. [M]He's a small man with a big ego - that about sums him up, doesn't it. [M]I'd just like to sum up by saying that it's been a tremendous pleasure to work with you. [I]Some people you can sum up (= know what they are like) at a glance. [M]A judge sums up towards the end of a trial when he or she makes a speech to the jury telling them again of the main matters to consider in a case.The judge, summing up at the trial of some of the rioters, made it quite clear where the duties of the jury lay.
Meaning of SUM in English
Cambridge English vocab. Кембриджский английский словарь. 2012