Overscrupulousness is a term that refers to being excessively concerned with ethical principles, often to the point of being overly cautious or rigid. Some synonyms for this word may include being scrupulous, conscientious, meticulous, careful or overly fastidious. Other terms that may be synonymous with overscrupulousness include being overly meticulous, perfectionistic, obsessive, or overzealous in one's adherence to rules and regulations. These words all share a sense of being very careful and diligent, but they may differ in their connotations or implications. Ultimately, the choice of synonym to use will depend on the specific context in which the word is being used.