Rigour

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Look up rigour in Wiktionary, the free dictionary.

Rigour (British English) or rigor (American English; see spelling differences) describes a condition of stiffness or strictness.^[1] These constraints may be environmentally imposed, such as "the rigours of famine"; logically imposed, such as mathematical proofs which must maintain consistent answers; or socially imposed, such as the process of defining ethics and law.