corruptio optimi pessima
Latin phrase
cor·rup·tio op·ti·mi pes·si·ma
| \ kȯ-ˈru̇p-tē-ˌō-ˈäp-ti-ˌmē-ˈpe-si-ˌmä
\
\
Definition of corruptio optimi pessima
: the corruption of the best is the worst of all