Longman Dictionary of Contemporary English homepage

Language: Old English
Origin: smeart

smart

1 adjective
     
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smart1 S3 W2 comparative smarter, superlative smartest
1

intelligent

especially American English intelligent or sensible [= clever; ≠ stupid]:
The smart kids get good grades and go off to college.
I was smart enough to wait for a week.
His decision to become a director was a smart move (=sensible thing to do).
2

disrespectful

trying to seem clever in a disrespectful way:
Don't get smart with me, young man.
He made some smart remark.
3

neat

British English
a) a smart person is wearing neat attractive clothes and has a generally tidy appearance [= sharp American English; ≠ scruffy]:
You're looking very smart.
b) smart clothes, buildings etc are clean, tidy, and attractive [= sharp American English]
a smart black suit
smart new offices
4

fashionable

British English fashionable or used by fashionable people:
one of Bonn's smartest restaurants
5TD

technology

smart machines, weapons, materials etc are controlled by computers and are designed to react in a suitable way depending on the situation [↪ smart bomb]:
smart weapons
6

the smart money is on somebody/something

used to say that a particular person or thing is likely to do something or be successful
7

quick

British English a smart movement is done quickly, especially with force:
a smart blow on the head
She set off at a smart pace (=fairly fast).
—smartly adverb:
a smartly dressed young man
He turned smartly and walked away.
—smartness noun [uncountable]
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.
 
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