laborioso

adj. hard-working, industrious, working; laboured, labored, laborious, toilsome

adj. industrious, hard-working, toilsome, laborious

adj. industrious, labored; laborious, ponderous; sedulous

= laborious, painstaking, labour-intensive [labour intensive].
Ex: The next step was a rather painful, laborious manual effort.
Ex: He uses a well-known simile in saying that 'the most painstaking examination of innumerable single trees will not tell us much about the nature of the forest'.
Ex: Catalogue maintenance in a large union catalogue based on cards or slips was a nightmare, and it was very labour-intensive to maintain such catalogues at more than one location.