adj.  dull or stale because of overuse; trite; hackneyed

n.  an idea or expression that has become stale due to overuse.

adj.  unoriginal; taken from something already existing

adj.  made commonplace by overuse; trite

n.  hack, one who copies or imitates the work of others.

adj.  lacking flavor or taste; unexciting

adj.  lacking vitality, energy, or brightness; boring

adj.  commonplace; ordinary

n.  quality of being dull; an obvious remark uttered as if it were original

adj.  dull; commonplace

adj.  unoriginal and state due to overuse

adj.  lacking freshness and zest; flat; stale