The property of lacking originality, repetitiveness, triteness, banality.(noun)
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Use "unoriginality" in a sentence
"Seriously what was a quality show in a tirade of unoriginality is turning into fanserv rubbish."
"Perhaps the most suspect of unoriginality is the remake."
"In my mind, unoriginality occurs when one attempts to transfer one story from one medium to another without any thought to changing, or even heightening, the themes or messages of the underlying story."