of only ordinary or moderate quality; neither good nor bad; barely adequate.

rather poor or inferior.

adjective

exceptional , extraordinary , inferior , superior , unusual

adjective

characterless , colorless , common , conventional , decent , dull , fair , fairish , fair to middling , humdrum * , indifferent , inferior , insignificant , intermediate , mainstream , mean , medium , middling , moderate , no great shakes , of poor quality , ordinary , passable , pedestrian , run-of-the-mill * , second-rate , so-so * , standard , tolerable , undistinguished , unexceptional , uninspired , vanilla * , average , commonplace , cut-and-dried , formulaic , garden , garden-variety , plain , routine , run-of-the-mill , stock , unremarkable , low-grade , low-quality , second-class , shabby , substandard , acceptable , adequate , normal , presentable , prosaic , serviceable , so-so