Definition of laborious in English:

laborious

adjective

1Requiring considerable time and effort.
‘years of laborious training’
‘the work is very slow and laborious’
- ‘This removes the laborious task of measuring the absolute leaf temperatures for individual plants in a population.’
- ‘But he became more and more irritated by the slow, laborious process of filming.’
- ‘The colourful faces are the result of laborious work.’
- ‘The message would then continue to each major city or town by regular courier until it reached its destination, a very slow and laborious process.’
- ‘And yes, its implementation can be laborious, lengthy, and slow to show dividends.’
- ‘Engraving is often described as a slow and laborious process, and its practitioners as drudges, but this is misleading.’
- ‘The work was slow and laborious - every piece of the hard rock had to be blasted out before being broken up with pick and shovel and hauled out of the horizontal shaft.’
- ‘However, it makes the process of buying and selling slow and laborious and these accounts are in the minority.’
- ‘Unfortunately, this can be a slow, laborious, and very deadly process.’
- ‘After all, it took me many years of intense misery, guilt, shame and terror before I could learn to accept myself, and that too was a slow and laborious process.’
- ‘The journey was slow and laborious, necessitating frequent stops.’
- ‘We are in danger of forgetting that democracy is a slow, laborious, messy matter.’
- ‘The ruptures in Eakins's paintings also communicated the studious and laborious character of the artist's process.’
- ‘I thought about doing the slow, laborious walk, but shrugged off the idea.’
- ‘It has transformed laborious manual procedures into rapid electronic ones.’
- ‘It's a slow and laborious process, though, on a creaky old dial-up phone connection.’
- ‘His photographs on show at Victoria Miro emerge out of a laborious process beginning with an image of a building or an interior.’
- ‘This is slow and laborious, so the method outlined below avoids this step.’
- ‘This is not to say all research work performed in such an environment is necessarily dull and laborious.’
- ‘Progress was slow and laborious, and his efforts yielded a quarter of the supplies he had lost.’
arduous, hard, heavy, difficult, strenuous, gruelling, murderous, punishing, exacting, tough, formidable, onerous, burdensome, back-breaking, trying, uphill, relentless, stiff, challenging, herculean
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1. 1.1 (of speech or writing style) showing obvious signs of effort and lacking in fluency.
  ‘she wrote in laborious, dictionary-assisted English’
  ‘It has some glimmers of interest, and some diverting visuals, but really nothing makes up for the laborious pace and risibly bad writing.’
  ‘The Watcher In The Woods is guilty of being slow and laborious.’
  ‘Not even the charisma of its leading lady, Julia Stiles, can save it from the overlong bore it becomes, due to its laborious pacing and cliché-ridden script.’
  ‘His writing was laborious, as he often confessed, hers brisk and often effortless.’
  ‘Even when the film flirts with shades of grey - such as the alternate visions of heroism offered by drunken knife-wielder Jim Bowie and his foppish rival William Travis - Hancock's adherence to rousing, simplistic conventions turns his story into laborious mush.’
  ‘But I found it impossible to get to grips with, laborious and dull.’
  laboured, strained, forced, contrived, affected, studied, stiff, stilted, unnatural, artificial, overdone, overwrought, heavy, ponderous, convoluted, not fluent, elaborate, over-elaborate, intricate, ornate, prolix
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