I. rig ‧ or /ˈrɪɡə $ -ər/ BrE AmE noun
[ Date: 1300-1400 ; Language: Old French ; Origin: Latin , from rigere ; ⇨ ↑ rigid ]
the American spelling of ↑ rigour
II. rig ‧ our BrE AmE British English , rigor American English /ˈrɪɡə $ -ər/ noun
1 . the rigours of something the problems and difficulties of a situation:
all the rigors of a Canadian winter
the stresses and rigours of modern life
2 . [uncountable] great care and thoroughness in making sure that something is correct:
Their research seems to me to be lacking in rigour.