Suppletive is a term used to describe words that have unique forms compared to other words in the same group. Synonyms for suppletive include "irregular," "unpredictable," "nonce," and "irreplaceable." Other alternatives may include "variant," "alternate," "exception," and "deviant." Suppletive words are often found in languages with complex grammar and morphology, such as Latin, Sanskrit, or Irish. In linguistics, suppletive forms cannot be predicted from the regular inflectional rules of a language, making them a source of interest and challenge for language learners and researchers. Despite their irregularity, suppletive words are an integral part of language diversity and creativity.