noun
                                                without obstructions to passage or view
                                                
                                                                                                Examples
                                                
                                                                                                        - the openness of the prairies
 
                                                                                        
                                                noun
                                                characterized by an attitude of ready accessibility (especially about one's actions or purposes)
                                                                                                Synonyms
                                                
                                                
                                                                                                Examples
                                                
                                                                                                        - without concealment
- not secretive
 
                                                                                        
                                                noun
                                                willingness or readiness to receive (especially impressions or ideas)
                                                                                                Synonyms
                                                
                                                
                                                                                                Examples
                                                
                                                                                                        - 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