Infrasocial is an adjective that means lacking social organization. 

Our word of the day comes from the Latin word ‘socius’ (SO see oos) meaning ‘friend’ and adds the prefix I-N-F-R-A meaning ‘below.’ If something or someone is infrasocial, their behavior is less than ideal. Used by researchers, infrasocial came into use in the mid-20th century. Here’s an example:

The guys in my old Fraternity could be infrasocal at times. Unless they were looking for a fight, they weren’t very interested in getting know people outside of the house.