banal (adj.)
- asinine
- average
- bewhiskered
- bland
- bromidic
- central
- cliched
- common
- commonplace
- corny
- cut-and-dried
- everyday
- familiar
- fatuous
- flat
- fusty
- hackneyed
- hoary
- humdrum
- intermediate
- jejune
- mean
- medial
- median
- mediocre
- medium
- middle-of-the-road
- middling
- moderate
- moth-eaten
- musty
- namby-pamby
- normal
- old
- ordinary
- pedestrian
- petty
- platitudinous
- routine
- sapless
- set
- silly
- simple
- square
- stale
- standard
- stereotyped
- stock
- threadbare
- timeworn
- tired
- trite
- trivial
- truistic
- unimaginative
- unoriginal
- usual
- vapid
- watery
- well-known
- well-worn
- wishy-washy
- worn