say it: RAHYT-nuhs
rightness is a noun meaning "according with conscience or morality". It carries 4 recorded senses.
appropriate conduct; doing the right thing
conformity to fact or truth
conformity with some esthetic standard of correctness or propriety
“it was performed with justness and beauty”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for rightness come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.