Subfixes are morphemes that are added to the end of a word to change its meaning. There are several synonyms for subfixes, each describing a different type of word ending. One synonym for subfixes is suffixes, which refers to a group of letters added to the end of a word to modify its meaning or create a new word altogether. Another synonym is postfixes, which are similar to suffixes but are used specifically in computer science to denote the addition of characters to the end of a string. Other synonyms for subfixes include affixes and endings. Regardless of the term used, all of these words describe the same fundamental linguistic concept: the addition of letters or sounds to the end of a word to modify its meaning.