say it: mee-dee-OH-kur
mediocre is an adjective meaning "moderate to inferior in quality". It carries 3 recorded senses.
moderate to inferior in quality
“they improved the quality from mediocre to above average”
lacking exceptional quality or ability
“a novel of average merit”
“only a fair performance of the sonata”
“in fair health”
“the caliber of the students has gone from mediocre to above average”
“the performance was middling at best”
Definitions, synonyms and semantic relations for mediocre come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.