6 ms·

Rigor! https://www.thefreedictionary.com/rigor https://www.thefreedictionary.com/rigor

• hnuser123456 7y ago
  that's what i thought, google only showed the medical definition at first, and i trusted it
• taneq 7y ago
  Either is good. https://en.wikipedia.org/wiki/Rigour https://en.wikipedia.org/wiki/Rigour
• gpvos 7y ago
  Rigour is the correct spelling in the UK.