1. excessively clever or inventive in a way that is impractical, unnecessarily complicated, or counterproductive
Usage: often implies that ingenuity has been taken too far or applied inappropriately

Examples

• His overingenious solution to the problem involved so many steps that it was harder to follow than the original issue.
• The designer's overingenious approach to the user interface made the app confusing rather than intuitive.
• She criticized the proposal as overingenious, arguing that a direct method would work better.
• The overingenious contraption broke down frequently because it was too complex to maintain.
• His overingenious explanation of a simple concept lost the audience halfway through.