Postfixes are a type of word part added to the end of a root word to change its meaning. There are various synonyms for postfixes, including suffixes, affixes, endings, terminations, and tails. Suffixes are perhaps the most commonly used synonym for postfixes, with the two terms often used interchangeably when discussing word structure. Affixes and endings are also commonly used to describe postfixes, as they both refer to word parts added to the beginning or end of root words. In addition, terminations and tails are less commonly used synonyms for postfixes, but can still be useful when discussing language and linguistics.