Affixation. Structural types of words. Immediate constituents

Affixation – the addition of an affix – is a basic meaning of forming words in English. Words which consist of a root and an affix are called derived words or derivatives and are produced by the process of word-building known as affixation or derivation. The process of affixation consists in coining a new word by adding an affix or several affixes to some root morpheme. Affixation is divided into suffixation and prefixation.