Formal:
* Byzantine: This word implies extreme complexity and intricate detail, often to the point of being confusing or difficult to understand.
* Prolix: This word describes something that is excessively wordy or verbose, making it unnecessarily complicated.
* Circuitous: This describes something that is indirect and roundabout, making it unnecessarily complex.
* Convoluted: This word suggests something that is twisted, tangled, and difficult to follow.
* Tortuous: Similar to convoluted, this word implies something winding, complex, and difficult to navigate.
Informal:
* Over the top: This phrase suggests something that is excessive and goes beyond what is necessary or reasonable.
* Hair-splitting: This implies an unnecessary focus on minor details, leading to overcomplication.
* A bit much: This is a casual way to say something is too complicated or overwhelming.
* A pain in the neck: This expresses frustration with something that is unnecessarily complicated and difficult to deal with.
The best word to use will depend on the specific context and the tone you want to convey.