Synonym: hard, harsh, relentless, rigid, severe, strict. Similar words: vigorous, vigorously, odorous, amorous, humorous, timorous, glamorous, clamorous. Meaning: ['rɪgərəs] 
adj. 1. rigidly accurate; allowing no deviation from a standard 2. demanding strict attention to rules and procedures.
adj. 1. rigidly accurate; allowing no deviation from a standard 2. demanding strict attention to rules and procedures. 
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1. The ship is still in rigorous quarantine.
2. The planes have to undergo rigorous safety checks.
3. The selection process is based on rigorous tests of competence and experience.
4. Our teacher is so rigorous that he seldom lets up on us.
5. Vigorous youth is subjected to rigorous discipline.
6. The arms trade should be subject to rigorous controls.
7. He is rigorous in his control of expenditure.
8. He is a very rigorous man, very persnickety.
9. The airline has rigorous safety standards .
10. Rigorous safety tests are being carried out on the new jet.
11. The soldiers were not yet seasoned to the rigorous climate.
12. She sets up a rigorous intellectual framework to deconstruct various categories of film.
13. The second team adopted a much more rigorous approach to the problem.
14. Taxis must conform to the rigorous standards laid down by the police.
15. They are a rigorous mystery(http://sentencedict.com), governed by unfathomable equations.
16. Then a rigorous initial training period begins.
17. It includes proper complaints and rigorous inspection procedures.
18. The car is put through rigorous road performance tests.
19. Among them are: Rigorous standards in wiring and installation.
20. It advocated more rigorous standards for planning future projects.
21. She cited its rigorous program and emotional strain.
22. But rigorous historical analysis is not Kapuscinski's forte.
23. In fact, Lucas adopts a much less rigorous approach.
24. However, rigorous empirical studies have challenged such characterizations.
25. Rigorous shift patterns allegedly discriminated against women with children.
26. Performance evaluations will be more rigorous.
27. All the results of rigorous staff training programs.
28. To be rigorous, we should treat this number as an integer.
29. She has loads of natural talent as a runner and with rigorous training she could be a world-beater.
30. Few people have gone into the topic in such rigorous detail.
More similar words: vigorous, vigorously, odorous, amorous, humorous, timorous, glamorous, clamorous, herbivorous, malodorous, omnivorous, carnivorous, borough, factor out, thorough, thoroughly, gorgeous, rouse, arouse, onerous, righteousness, rousing, fibrous, generous, numerous, wondrous, rousseau, rapturous, dexterous, ponderous.