In-fixes, also known as infixes, are morphemes that are inserted inside a word to change its meaning. This linguistic device is different from prefixes and suffixes, which are added to the beginning or end of a word, respectively. Antonyms for in-fixes include but are not limited to: affixes, suffixes, prefixes, circumfixes, and suprafixes. Affixes encompass any morpheme that can be added to a word, whereas suffixes and prefixes refer specifically to morphemes added to the beginning or end of a word. Circumfixes, on the other hand, consist of a combination of a prefix and a suffix surrounding a base word, while suprafixes are rare and refer to additions made above the root word.