Commonplace, ordinary, or unimaginative.
Example:
While politicians endlessly discussed the great issues facing Russia, the Russians worried about such pedestrian concerns as finding enough food, shelter, and clothing.
A pedestrian is, of course, someone who travels on foot. But the sense of this word as defined above is actually its original meaning. To be pedestrian was to be drab or dull, as if plodding along on foot rather than speeding on horseback or by coach. Pedestrian is often used to describe a writing style that is colorless or lifeless, but it can also describe politicians, public tastes, and personal qualities and possessions. In comparison with the elaborate stage shows put on by today's rock artists, for instance, most of the stage antics of the rock stars of the 1960s seem pedestrian.