Circular insanity can be defined as a never-ending cycle of irrational thoughts or behaviors. Some synonyms for this term include 'vicious circle', 'hamster wheel', 'repetitive cycle', 'mind loop', 'recurrent madness', and 'endless loop'. These words describe the frustrating and repetitive nature of circular insanity. All of these synonyms suggest a pattern or cycle that is difficult to break free from, and can often be self-perpetuating. The use of these words can help individuals to understand the nature of circular insanity, and may help them to find ways to break free from these cycles and move forward in a healthier and more positive direction.