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English definition of “rigorous”

rigorous

adjective     /ˈrɪɡərəs/
detailed and careful: I want rigorous financial analysis of the options. The selection process is extremely rigorous.
strict or severe: A rigorous monetary and fiscal policy should encourage efficiency. Refrigeration of food, improved hygiene and rigorous standards in the food industry prevent gastro-intestinal infections.
(Definition of rigorous adjective from the Cambridge Business English Dictionary © Cambridge University Press)
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