Gruelling synonyms

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The definition of arduous is a way of describing something that is extremely tiring and difficult.
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Demanding great exertion; arduous and exhausting.
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Alternative spelling of gruelling.
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Using or based on data that are readily quantified or verified:
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Hard to lift or move because of great weight; weighty
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Very busy; industrious
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That inflicts punishment
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Characterized by or requiring toil.
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Find another word for gruelling. In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for gruelling, like: arduous, backbreaking, grueling, hard, heavy, laborious, operose, punishing and toilsome.