Banality refers to phrases or ideas overused to the point they lose originality or impact. The book was full of banalities that made the characters seem flat.
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Predictability
When something is a banality, it's so predictable that it's uninteresting. Romantic comedies often end in banality, with couples predictably getting together.
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Negative Connotation
Banality carries a negative tone, suggesting lack of creativity or freshness. His painting was criticized for its banality, lacking any innovative elements.