Editing Morphological derivation (section)

==Productivity==
Derivational patterns differ in the degree to which they can be called [[Productivity (linguistics)|productive]]. A productive pattern or affix is one that is commonly used to produce novel forms. For example, the negating prefix ''un-'' is more productive in English than the alternative ''in-''; both of them occur in established words (such as ''unusual'' and ''inaccessible''), but faced with a new word which does not have an established negation, a native speaker is more likely to create a novel form with ''un-'' than with ''in-''. The same thing happens with suffixes. For example, if comparing two words ''Thatcherite'' and ''Thatcherist'', the analysis shows that both suffixes ''-ite'' and ''-ist'' are productive and can be added to proper names, moreover, both derived adjectives are established and have the same meaning. But the suffix ''-ist'' is more productive and, thus, can be found more often in word formation not only from proper names.