Entry 3 senses · 2 variants Webster, 1913 mediocre /(mē`dĭ*ō"kẽr)/ · me·di·o·cre · IPA /ˌmidiˈoʊkəɹ/ a. n. 01 a. Of a middle quality; of but a moderate or low degree of excellence; indifferent; ordinary. 1. Of a middle quality; of but a moderate or low degree of excellence; indifferent; ordinary. 02 n. A mediocre person; a mediocrity. 1. A mediocre person; a mediocrity.[R.] 2. A young monk who was excused from performing a portion of a monk's duties.