time-consuming Synonyms

job-laden labourious chronophagous longtime longstanding long-range drawn-out labour-intensive labor-intensive wasteful troublesome laboursome long-drawn-out slow-moving with a high labour content time-sapping time taking physically demanding laborintensive taking considerable time labour-consuming labor-consuming slowest timeconsuming toilful tedious inefficient hard gradual extended draining demanding cumbersome consuming considerable belated intensive involved laborious sustained slow protracted prolonged painstaking operose onerous long lingering lengthy arduous