audio
adjective
bland - Lacking strong features or characteristics and therefore uninteresting
noun
tedium - The state of being tedious
mundane - Ordinary and not interesting or exciting
monotonous - Repetitious and boring
tiresome - Making you feel annoyed or bored
humdrum - Activity, work or routine that is boring, monotonous or unexciting.
Picture
Cliché - An overused phrase or expression that has lost its originality or impact.
drab - Lacking brightness or interest; drearily dull
tedious - Too long, slow, or dull: tiresome or monotonous
hackneyed - (of a phrase or idea) lacking significance through having been overused; unoriginal and trite