Overtechnical, often used to describe something that is overly complex or too specialized, can be replaced with a variety of synonyms that carry similar meanings. Some of these include: overly complicated, excessively intricate, hyper-specialized, needlessly complicated, excessively detailed, overly elaborate, labyrinthine, convoluted, and excessively technical. These synonyms can be used in different contexts to describe things like manuals, instructions, processes, or even conversations that are too specialized or complex for the intended audience. It is important to choose the right synonym according to the context to convey the intended meaning accurately and effectively.