Suprafix

In linguistics, a suprafix is a type of affix that gives a suprasegmental pattern (such as tone, stress, or nasalization) to either a neutral base or a base with a preexisting suprasegmental pattern. This affix will, then, convey a derivational or inflectional meaning. This suprasegmental pattern acts like segmental phonemes within a morpheme; the suprafix is a combination of suprasegmental phonemes, organized into a pattern, that creates a morpheme. For example, a number of African languages express tense / aspect distinctions by tone. English has a process of changing stress on verbs to create nouns.