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hard, arduous, heavy, backbreaking, grueling, gruelling, laborious, operose, punishing, toilsome, painstaking, worksome | characterized by effort to the point of exhaustion; especially physical effort | |
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meticulous, punctilious, careful, painstaking, scrupulous, precise, rigorous | marked by precise accordance with details | |
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conscientious, painstaking, scrupulous | characterized by extreme care and great effort |