It's a bit derivative.

Meaning

The work lacks originality and borrows heavily from other sources.

Examples

• John: What did you think of the novel?
• Alice: To be honest, <b>it's a bit derivative</b>. I've read similar plots before.
• John: I agree, it lacked originality. The characters were unconvincing as well.
• Alice: Yes, unfortunately. I found it quite predictable; <b>it's a bit derivative</b> of other works.