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English definition of “gruelling”

gruelling

adjective mainly UK (US grueling)
 
 
/ˈɡruːəlɪŋ/
Gruelling activities are very difficult and make you very tired: a gruelling bicycle raceDifficult things and peoplePreventing and impedingEffort and expending energyTrying and making an effortComplicated and difficult to doDifficult to understand
(Definition of gruelling from the Cambridge Learners Dictionary © Cambridge University Press)
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