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not easy to do, deal with, or understand
using a lot of effort
needing a lot of time, ability, and energy
difficult to deal with or achieve, but interesting and enjoyable
extremely difficult and involving a lot of effort
difficult, and needing a lot of physical or mental effort
very difficult and involving a lot of continuous effort
difficult to do, deal with, or understand, especially because of involving a lot of different processes or aspects
to be difficult, tiring, or boring to do
… a language for human communication which has been invented and has not developed naturally
the difference between how much money you get when you sell something and how much it costs you...
spectacles; boiled sweets, candy; soft aniseed-flavoured jelly sweets coated with blue and pink sugar sprinkles
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Free thesaurus definition of difficult to do and involving a lot of effort from the Macmillan English Dictionary - a free English dictionary online with thesaurus and with pronunciation from Macmillan Publishers Limited.