English rigor

← Proto-Indo-European *reyǵ- (root)

← Latin rigor (mention)

← Latin rigere (mention)

→ English rigid (mention)

→ English rigorize (suffix)

→ English rigorism (suffix)

→ English rigorization (suffix)

→ English rigorisation (suffix)

→ English rigorise (suffix)

→ English rigoristic (suffix)

→ English rigored (suffix)