Equatable means capable of being compared or regarded as equal. There are several synonyms for this word, including comparable, commensurate, proportionate, equivalent, and similar. Comparable means able to be judged or measured against something else. Commensurate implies that something is of the same or similar size, extent or duration as something else. Proportionate suggests that things are in the right balance or proportion to each other. Equivalent implies identical or equal in worth or value. Lastly, something that is similar is easily compared to something else because it shares certain qualities or characteristics. These synonyms all convey the idea of something being able to be compared to or considered equal to something else.