me ‧ di ‧ o ‧ cre /ˌmiːdiˈəʊkə◂ $ -ˈoʊkər◂/ BrE AmE adjective
[ Date: 1500-1600 ; Language: French ; Origin: Latin mediocris 'halfway up a mountain' , from medius 'middle' + ocris 'stony mountain' ]
not very good SYN second rate :
I thought the book was pretty mediocre.
a mediocre student
—mediocrity /ˌmiːdiˈɒkrəti, ˌmiːdiˈɒkrɪti $ -ˈɑːk-/ noun [uncountable]