laborious
/ləˈbɔːɹiəs/ adjective
Forms labourious laborous labourous
- adjective Requiring much physical effort; toilsome.
- adjective Mentally difficult; painstaking.
- adjective Industrious.
Synonyms
painstaking toilsome worksome painful arduous backbreaking grueling gruelling hard heavy operose punishing
Etymology
From Old French laborios, from Latin laboriosus. By surface analysis, labor + -ious
Webster’s 1913
- adjective Requiring labor, perseverance, or sacrifices; toilsome; tiresome.
- adjective Devoted to labor; diligent; industrious; as, a laborious mechanic.
Etymology [L. laboriosus,fr. labor labor: cf. F. laborieux.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “laborious”, CC BY-SA 4.0. Details