Latin mediocris 'halfway up a mountain', from medius 'middle' + ocris 'stony mountain'
not very good [= second rate]:
I thought the book was pretty mediocre.
a mediocre student
WORD FOCUS: bad WORD FOCUS: bad very bad:awful, terrible, horrible, lousyinformal, appalling, ghastly, atrocious, horrendous bad, but not very bad:not very good, mediocre, second-rate, so-so, lacklustre of bad quality:shoddy, inferior, poor quality, cheap, crummyinformal bad at doing something:be no good at something very bad at doing something:hopeless, terrible, useless, lousyinformal, incompetent morally bad:evil, wicked, immoral, corrupt, sick, perverted, degenerate ➔ See alsobad
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.