(BrE) (AmE rigor) noun
1 [U] the fact of being careful and paying great attention to detail:
academic / intellectual / scientific rigour
2 [U] (formal) the fact of being strict or severe
SYNSEVERITY:
This crime must be treated with the full rigour of the law.
3 (the rigours of sth) [pl.] the difficulties and unpleasant conditions of sth:
The plants were unable to withstand the rigours of a harsh winter. * She woke refreshed to face the rigours of a new day.
