run-of-the-mill

from WordNet (r) 3.0 (2006)

run-of-the-mill
    adj 1: not special in any way; "run-of-the-mill boxing"; "your
           run-of-the-mine college graduate"; "a unexceptional an
           incident as can be found in a lawyer's career" [syn:
           {run-of-the-mill}, {run-of-the-mine}, {mine run},
           {unexceptional}]

from The Collaborative International Dictionary of English v.0.48

run-of-the-mill \run-of-the-mill\, a.
   Ordinary; common; unexceptional.
   [PJC]