ordinary
average
bourgeois
common
commonplace
conventional
garden
garden-variety
middle-class
mundane
no great shakes
normal
plastic
regular
run-of-mine
run-of-the-mill
suburban
unexceptional
unnoteworthy
unspectacular
usual
dissimilar
expressionless
featureless
forgettable
inadmissible
innocuous
nondescript
unattractive
uncalled
unchanged
unconvinced
undamaged
undistinguished
uneventful
unfitted
unimportant
unimpressed
unimpressive
uninhabited
uninteresting
unlined
unreadable
valueless
remarkable