openness
Word family
Synonym discussion
Sense: noun/1
For noun/1, openness points to a habit of not hiding what you think or feel. Honesty is the broadest word and can describe truthfulness even when a person says very little. Frankness is more direct and can sound sharper when someone says something uncomfortable. Candor is fairly formal and often appears in interviews, public statements, or workplace feedback. Transparency is especially common for companies, schools, and governments that share information clearly, so it often focuses more on process than on personal feeling. You can praise a friend for openness about her fears, but praise a city office for transparency in its spending reports.
Etymology
Openness was formed in English by adding the noun ending -ness to open. It first named the state of being physically open, and later it also came to describe people who speak plainly and minds willing to accept new ideas.