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English definition of “assiduous”

assiduous

adjective     /əˈsɪd.ju.əs/ formal
showing hard work, care, and attention to detail: assiduous research/efforts an assiduous student The government has been assiduous in the fight against inflation.Effort and expending energyTrying and making an effort assiduously     /-li/ adverb I assiduously avoid buying imported products.Effort and expending energyTrying and making an effort assiduousness     /-nəs/ noun [U]
(Definition of assiduous adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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