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burdensome▼(of or like a burden; arduous or demanding)adjective[UK: ˈbɜːdn.səm] [US: ˈbɝː.dən.səm]
cumbersome▼(burdensome or hindering, as if a weight or drag; vexatious; cumbrous)adjective[UK: ˈkʌm.bə.səm] [US: ˈkʌm.bər.səm]
onerous▼(burdensome)adjective[UK: ˈəʊn.ər.əs] [US: ˈoʊn.ər.əs]
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