retentiveness retentiveness /rɪˈtɛntɪvnəs/

noun

1. () The power of retaining and recalling past experience  ( retentivity , retention , retentiveness , memory )
   the power of retaining and recalling past experience
    He had a good memory when he was younger
   he had a good memory when he was younger
   
2. The power of retaining liquid  ( retention , retentiveness , retentivity )
   the power of retaining liquid
    Moisture retentivity of soil
   moisture retentivity of soil
   
3. The property of retaining possessions that have been acquired  ( retentiveness , retentivity )
   the property of retaining possessions that have been acquired