When describing a technically complex product, it can be helpful to use synonyms to convey the scope of the product's complexity. Some synonyms for technically complex products include intricate, sophisticated, high-tech, advanced, complicated, and intricate. These words suggest that the product contains complex systems and requires advanced knowledge or skill to operate. Other synonyms that describe the complexity of a product include multifaceted, intricate, detailed, and multi-layered. Whether you are describing a piece of technology or a complex physical system, using these synonyms can help your audience understand the depth of the subject.