1) Average 2) Average, mediocre 3) Commonplace 4) Fair 5) Fairly good but not very good 6) Mediocre 7) Ordinary 8) Pedestrian 9) Run of the mill 10) Second-rate 1) Average 2) Fair 3) Fairly 4) Moderately 5) Ordinary 6) Passably 7) Reasonably 8) So so 9) Standard 
• (a.) Of middle rank, state, size, or quality; about equally distant from the extremes; medium; moderate; mediocre; ordinary.
Mid'dling adjective Of middle rank, state, size, or quality; about equally distant from the extremes; medium; moderate; mediocre; ordinary. 'A town of but middling size.' Hallam. « Plainly furnished, as beseemed the middling circumstances of its inhabitants.» Hawth...
fairly good but not very good 
Brake Wheel and WindshaftSee Stock
[n] - any commodity of intermediate quality or size (especially when coarse particles of ground wheat are mixed with bran)
noun any commodity of intermediate quality or size (especially when coarse particles of ground wheat are mixed with bran)