/ ˌmiːdiˈɒkrəti; NAmE -ˈɑːk-/ noun ( pl. -ies ) ( disapproving )
1.
[ U ] the quality of being average or not very good :
His acting career started brilliantly, then sank into mediocrity.
2.
[ C ] a person who is not very good at sth :
a brilliant leader, surrounded by mediocrities