rigorousness
ri·go·rous·ness
noun
Origin
From Middle English rigoresnes, rigoresnesse, rigorousenes, equivalent to rigorous + -ness.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.