Synonyms of rigorousness
- 2 Syllables
- hardness, strictness, sternness, harshness, rigor, toughness, cruelty, sharpness, grimness
- 3 Syllables
- niceties, unkindness, stringency, exactness, nicety
- 4 Syllables
- austerity, hardheartedness, acerbity, rigidity