Lynguistykon: Affixes
Affixes are morphemes appended at the beginning, middle, and/or end of a word (i.e. attached to the other morpheme(s) comprising it) to alter or deepen its meaning. Often, words are formed by combining base morphemes (bases) with affix morphemes (affixes) to easily communicate meaning; some morphemes can serve either as a base or affix. Also in certain languages/cases, the same affix morpheme(s) can be applied either at the beginning (as a prefix morpheme) or end (as a suffix morpheme) of a word interchangeably.
Prefixes
Prefixes are affixes that attach at the beginning of a word.
Infixes and Transfixes
Infixes are affixes that attach in the inner contents of a word. Transfixes are affixes broken into more than one portion with each one going in a different segment of the word.
Suffixes
Suffixes are affixes that attach at the end of a word.
Circumfixes
Circumfixes are affixes involving an addition at both the beginning and end of a word.