C1 noun ˌmɑːr.dʒɪ.nəl.aɪˈzeɪ.ʃən
marginalization
marginalisation
Meaning
The treatment of a person, group, or concept as insignificant or peripheral.
Example
Economic policies should address the marginalization of the poor.
Les politiques économiques devraient aborder la marginalisation des pauvres.