The definition of austerity refers to being strict, serious, and inflexible, or to being very moral and refraining from carnal pleasures.
Rigor is something strict, severe or demanding.
The relative resistance of a metal or other material to denting, scratching, or bending.
Find another word for rigidities. In this page you can discover 5 synonyms, antonyms, idiomatic expressions, and related words for rigidities, like: stringencies, severities, austerities, rigors and hardnesses.