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showing that you are not intelligent, not serious, not thinking carefully etc
unable to understand difficult or complicated ideas
unable to understand things quickly and easily
not intelligent, so that you need a lot of time to understand simple things
informal extremely stupid
not sensible or intelligent
offensive not intelligent, or not able to consider or judge things carefully
in competitive cycling, the illegal use of motors on bikes in order to gain advantage over other riders
the long part of a golf course that you hit the ball along to get to the hole
be reversed; be as if it had never happened
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Free thesaurus definition of words used to describe unintelligent people from the Macmillan English Dictionary - a free English dictionary online with thesaurus and with pronunciation from Macmillan Publishers Limited.