say it: OH-puhn-nuhs
openness is a noun meaning "without obstructions to passage or view". It carries 3 recorded senses.
willingness or readiness to receive (especially impressions or ideas)
“he was testing the government's receptiveness to reform”
“this receptiveness is the key feature in oestral behavior, enabling natural mating to occur”
“their receptivity to the proposal”
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 openness 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.