(CLEVER) [adjective] -er, -est - intelligent, or able to think quickly or cleverly in difficult situationsGemma's teacher says she's one of the smartest kids in the school.Why don't you fix it if you're so smart?I ain't smart enough to understand computers.He's smart enough to know he can't run the business without her.Quitting that job was the smartest move I ever made.(informal) A smart alec/aleck is someone who annoys other people by trying to appear to be cleverer and more knowledgeable than them.I'm fed up with being bossed around by those smart alecs from the university.He's just a smart-aleck know-all who thinks he's got all the answers.(informal) A smart ass/(UK and ANZ also) smart arse is a clever or highly qualified person who thinks he or she knows the solutions to everyone's problems and is too eager to tell other people what to do.I don't want some smart ass from the city telling me how to manage my farm.He's a real smart arse and reckons he knows all the answers.I've had enough of your smart-assed remarks about how I should live my life.A smart bomb is a bomb which is directed to the object it is intended to hit by a television signal or a laser.A smart card is a small plastic electronic card with a computer memory which can be carried conveniently and is used to make payments and to store personal information which can be read when connected to a computer system.The smart card has quite a large memory so that it can record every purchase that is made with it.A smart card is necessary to decode some satellite television broadcasts.Smart drugs are drugs which are designed to make you more intelligent or help you think more clearly.Smart money is money that is invested by experienced investors who know a lot about what they are doing.The smart money is on a rise in the stock market over the next year.(figurative) The smart money says (= The experts believe) she will win the world championship.(figurative) The smart money is on humans landing on Mars in the first half of the 21st century.(US informal) If someone says you have a smart mouth they mean you are too clever and lack respect in what you say.I don't want to hear any more of your smart mouth for the rest of the afternoon!
SMART
Meaning of SMART in English
Cambridge English vocab. Кембриджский английский словарь. 2012