Synonym: burdensome, taxing. Similar words: generous, numerous, boisterous, obstreperous, come round, sooner or later, nervous, around the corner. Meaning: ['ɑnərəs /'ɒn-] 
adj. not easily borne; wearing.
adj. not easily borne; wearing. 
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1. My household duties were not particularly onerous.
2. This is the most onerous task I have ever undertaken.
3. Their onerous errand completed, the men resumed their jobs.
4. Onerous conditions of contract cost money.
5. But Tule Lake has a more onerous history.
6. They are onerous and omnipresent, useless and demeaning.
7. Such a responsibility can prove onerous because a child who comes from an introverted home is likely to be introverted her/himself.
8. In the western part of the country, onerous taxes have depressed investments and slowed the introduction of modern technology.
9. But managing franchisers proved too onerous for the founders, so they began looking for a buyer.
10. However, restrictions are less onerous than in most other parts of the Middle East.
11. They need to know that the onerous tasks they are performing are done correctly and are appreciated by line managers.
12. Father Conlin combined all these many onerous tasks with great efficiency but above all with constant good humour and kindness.
13. He abolished onerous taxes and puritanically banned prostitution, opium, gambling, even liquor.
14. I have the onerous job on her father's behalf of trying to persuade her to return.
15. He will have the onerous task of reviving low morale.
16. But this does put an exceedingly onerous burden on women who are required to bear, rear and look after the offspring.
17. However, they are more onerous than the simple formalities involved in undertaking partnership.
18. Due to the onerous nature of this work it is important that any engagement letter fully indemnifies the Firm.
19. Her sad and onerous duty is garbed in the rhetoric of a civil right.
20. Instead, they said businesses would be allowed to take regulators to court if they found regulations too onerous.
21. The skilful salesperson will ask for a concession in return - perhaps a less onerous delivery schedule.
22. The preparation of a Management Plan need not be a onerous task.
23. You have a self-disciplined and energetic approach to life now that should help you get even the most arduous and onerous tasks done.
24. The owners of the dredger required it to complete a contract which contained an onerous penalty clause.
25. The owner of a patent does not have the unfettered right to make an invention available only on onerous terms.
26. But Lind's claim to the prize, relying on the more onerous task of comparing different individuals, remains the stronger.
27. Still,(sentencedict.com) the financing may not turn out to be onerous.
28. To some, the initiative and referenda have proliferated to the point that they already have become onerous and impractical.
29. In the case of buildings let in separate parts for use as factories, more onerous duties are imposed on the landlord.
30. In contrast, where the firm is acting as an adviser its disclosure obligation will be more onerous.
More similar words: generous, numerous, boisterous, obstreperous, come round, sooner or later, nervous, around the corner, malodorous, round and round, hero, erode, on the road, border on, owner, take the road, a matter of, a number of, any number of, nerve, cholesterol, winner, manner, runner, energy, to the number of, mineral, planner, trainer, prisoner.