The word "synonymical" is used to describe something that is related to synonyms or has the properties of synonyms. Some synonyms for "synonymical" include synonymous, synonymousness, synonymic, and synonymy. These words all refer to the study or use of synonyms. "Synonymous" refers to having the same or similar meaning as another word, while "synonymousness" refers to the quality of being synonymous. "Synonymic" is often used to describe words that are interchangeable or have the same meaning, while "synonymy" refers to the set of synonyms in a language or field of study. Overall, these synonyms provide a range of ways to describe the concept of "synonymical" and its related concepts.