Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A disfix is a subtractive morpheme, that is, a morpheme which manifests itself through elision (the removal of segments from a root or stem). Thus it can be seen as a kind of "anti-affix". An example comes from Murle, an Eastern Sudanic language of southern Sudan: /o i t/ "rib" /o i / "ribs". Disfixes are uncommon, but are important in the Muskogean languages of the southeastern United States.