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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
in an online conversation, repeatedly asking a person questions which suggest that you are interested in what they are talking about, but are actually intended to annoy them
a soft fruit that has a green skin and a large hard seed inside. It grows on a tree and is a type...
an electric skateboard
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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.