Synonym: backbreaking, grueling, gruelling, hard, heavy, laborious, operose, punishing, straining, strenuous, toilsome. Similar words: assiduous, tenuous, virtuous, sumptuous, ambiguous, ingenuous, superfluous, innocuous. Meaning: ['ɑːdjʊəs] 
adj. 1. characterized by toilsome effort to the point of exhaustion; especially physical effort 2. taxing to the utmost; testing powers of endurance 3. difficult to accomplish; demanding considerable mental effort and skill.
adj. 1. characterized by toilsome effort to the point of exhaustion; especially physical effort 2. taxing to the utmost; testing powers of endurance 3. difficult to accomplish; demanding considerable mental effort and skill. 
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31) You have a self-disciplined and energetic approach to life now that should help you get even the most arduous and onerous tasks done.
32) After an arduous five-year apprenticeship in the disciplines of war the twenty-one-year-old Duke had produced his masterpiece.
33) He had traveled with them during their arduous political journeys through the presidential primaries the previous wInter.
34) In arduous debate, the semiliterate or illiterate juror is too readily won over by the selectivity of a persuasive reader.
35) The youngsters took part in an arduous sponsored swim to raise the cash.
36) Together they made an arduous two-day trek across mountains with women and child refugees to the coastal town of Split.
37) Twenty years ago the treasurer's job was simple and none too arduous.
38) There was no time for the arduous toil required to master a foreign language.
39) Popplewell is now back in harness after the arduous Lions tour to New Zealand.
40) If the hike, canoe journey or horseback trek were too arduous, there would be few takers.
41) The climb is arduous, but well worth the effort, as the views from the top are spectacular.
42) The lives of peasants are dictated by the arduous and endless cycle of their crops.
43) Some medical students were asked why they wanted to do a particular arduous diagnostic procedure on their patient.
44) Today, Corbett will continue his arduous climb to the top of the park's highest peak.
45) The duties of the ordinary policeman, who was known as a constable, were arduous, at least in Colombo.
46) All diary recording is arduous and this was no exception.
47) But for those who choose arduous outdoor recreations like climbing, water sports and ski-ing this is particularly so.
48) The long, arduous journey to Bethlehem could have resulted in a miscarriage or stillbirth.
49) We asked her why she has given herself such an arduous task.
50) Niyogi had made the police's work of extortion and intimidation more arduous.
51) The vocational profession of Alpine shepherd is on the wane, an arduous life with unreliable income.
52) The arduous task of legging through a long tunnel like that under Castle Hill at Dudley could take over 3 hours.
53) Later, Taylor denied that more arduous work was ever demanded of the men in his shops.
54) The original reason for early retirement was that most military jobs in days gone by were physically arduous.
55) They've already begun the arduous task of carrying their plants half a mile across town to their new home.
56) an arduous journey across the Andes.
57) She braced up for the arduous task.
58) We must persevere in the arduous work.
59) We must have patience in doing arduous work.
60) So I should make arduous efforts!
More similar words: assiduous, tenuous, virtuous, sumptuous, ambiguous, ingenuous, superfluous, innocuous, voluptuous, continuous, incongruous, promiscuous, conspicuous, tempestuous, disingenuous, presumptuous, hazardous, duotone, duodenum, hard, card, yard, award, beard, board, guard, heard, pardon, aboard, ardent.