A Quasigentsia Glossary

Communitas is a Latin noun commonly referring either to an unstructured community in which people are equal, or to the very spirit of community. It also has special significance as a loanword in cultural anthropology and the social sciences. Victor Turner, who defined the anthropological usage of communitas, was interested in the interplay between what he called social ‘structure’ and ‘antistructure'; Liminality and Communitas are both components of antistructure.

An unstructured community in which people are equal.
The very spirit of community; an intense community spirit, the feeling of great social equality, solidarity, and togetherness.