say it: FAWR-thrahyt-nuhs
forthrightness is a noun meaning "the quality of being honest and straightforward in attitude and speech". It is pronounced /ˈfɔɹˈθɹaɪtnəs/ — FAWR-thrahyt-nuhs. It carries one recorded sense.
the quality of being honest and straightforward in attitude and speech
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 forthrightness 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.