This contribution aims to reflect the lack of attention in the linguistic use of the term sorority. A terminological absence denotes a symbolic absence, an absence of signification of the dimension of a feminine singularity/plurality. To re-evaluate this dimension, it is necessary to bring to analysis its constitutive structures, the Erlebnisse, and to find in them which characterises it in community, entropy. To re-establish the dialogical position of sorority and fraternity within dual anthropology.