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Definition of rigorous adjective from the Oxford Advanced Learner's Dictionary

rigorous

adjective
 
/ˈrɪɡərəs/
 
/ˈrɪɡərəs/
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  1. done carefully and with a lot of attention to detail synonym thorough
    • a rigorous analysis
    • Few people have gone into the topic in such rigorous detail.
    • The second team adopted a much more rigorous approach to the problem.
  2. demanding that particular rules, processes, etc. are strictly followed synonym strict
    • The work failed to meet their rigorous standards.
    • They may benefit from the rigorous application of competition policy.
    Topics Permission and obligationc1
  3. Word Originlate Middle English: from Old French rigorous or late Latin rigorosus, from rigor ‘stiffness’, from rigere ‘be stiff’.
See rigorous in the Oxford Advanced American DictionarySee rigorous in the Oxford Learner's Dictionary of Academic English
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