"Complicative" is a term often used in medical or technical contexts to describe situations that involve complicating factors or issues. However, there are several synonyms that can be used interchangeably to convey the same meaning. Words such as complex, intricate, convoluted, involved, or knotty can all be used as alternatives to "complicative". These terms emphasize the challenging or intricate nature of a particular situation, highlighting the presence of multiple interconnected factors or difficulties. It is essential to choose the most appropriate synonym based on the specific context to ensure clear and effective communication.