Parasynthesis is a structure of word formation where a prefix and a suffix are added to a base word to create a new word. Some synonyms for the word parasynthesis include affixation, prefixation, and suffixation. Affixation is the general term for adding a prefix and/or suffix to a base word to change its meaning or form. Prefixation refers specifically to the addition of a prefix to the beginning of a base word, while suffixation refers to the addition of a suffix to the end of a base word. All three terms describe the process of creating new words by combining smaller elements with a base word.