The word "antimetric" refers to something that is not measured or cannot be measured in a standard way. Some synonyms for this term include non-conforming, unconventional, irregular, and atypical. Other similar words include non-standard, inexplicable, unpredictable, and aberrant. These are all adjectives that describe something that does not conform to a specific set of rules or standards. When describing a situation or object that isn't easily measured or doesn't follow the usual pattern, it can be helpful to use one of these synonyms for "antimetric." By using these various descriptions, writers and speakers can convey a sense of the unique and unusual nature of what they are describing.