openness

Noun

• 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
    

• characterized by an attitude of ready accessibility (especially about one's actions or purposes); without concealment; not secretive

• without obstructions to passage or view
  • the openness of the prairies
    

Related words

• Synonyms: 
  receptiveness , receptivity , nakedness
• Antonyms: 
  closeness , secretiveness