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Difficult to do and involving a lot of effort - synonyms or related words

difficult

adjective

not easy to do, deal with, or understand

hard

adverb

using a lot of effort

tough

adjective

difficult

demanding

adjective

needing a lot of time, ability, and energy

challenging

adjective

difficult to deal with or achieve, but interesting and enjoyable

arduous

adjective

extremely difficult and involving a lot of effort

taxing

adjective

difficult, and needing a lot of physical or mental effort

punishing

adjective

extremely difficult, tiring, or damaging

complicated

adjective

difficult to do, deal with, or understand, especially because of involving a lot of different processes or aspects

be an effort

to be difficult, tiring, or boring to do

bit rot

when electronic information is lost because the software or devices needed to read it are no longer available

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troll factory

a company that pays its employees to write online comments in favour or against somebody or something posing as ordinary Internet users

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