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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
an employment concept in which people are paid for each specific, short-term task that they do and don't have conventional contracts of employment
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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.