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Derivational morphology changes both the meaning and the content of a listeme, while inflectional morphology doesn't change the meaning, but changes the function. A non-exhaustive list of derivational morphemes in English: -ful, -able, im-, un-, -ing, -er. A non-exhaustive list of inflectional morphemes in English: -er, -est, -ing, -en, -ed, -s.
A morpheme is any of the smallest meaningful constituents within a linguistic expression and particularly within a word. [1] Many words are themselves standalone morphemes, while other words contain multiple morphemes; in linguistic terminology, this is the distinction, respectively, between free and bound morphemes.
Affixes are bound by definition. [5] English language affixes are almost exclusively prefixes or suffixes: pre-in "precaution" and -ment in "shipment". Affixes may be inflectional, indicating how a certain word relates to other words in a larger phrase, or derivational, changing either the part of speech or the actual meaning of a word.
Unlike derivational suffixes, English derivational prefixes typically do not change the lexical category of the base (and are so called class-maintaining prefixes). Thus, the word do, consisting of a single morpheme, is a verb, as is the word redo, which consists of the prefix re-and the base root do.
In morpheme-based morphology, word forms are analyzed as arrangements of morphemes. A morpheme is defined as the minimal meaningful unit of a language. In a word such as independently, the morphemes are said to be in-, de-, pend, -ent, and -ly; pend is the (bound) root and the other morphemes are, in this case, derivational affixes.
A morpheme will sometimes be used as its own gloss. This is typically done when it is the topic of discussion, and the author wishes it to be immediately recognized in the gloss among other morphemes with similar meanings, or when it has multiple or subtle meanings that would be impractical to gloss with a single conventional abbreviation.
The root morpheme is the primary lexical unit of a word, which carries the most significant aspects of semantic content and cannot be reduced to smaller constituents. [3] The derivational morphemes carry only derivational information. [4] The affix is composed of all inflectional morphemes, and carries only inflectional information. [5]
Inspired by the success of the Universal Dependencies for cross-linguistic annotation of syntactic dependencies, similar efforts have emerged for morphology, e.g., UniMorph [1] and UDer. [2] These feature simple tabular ( tab-separated ) formats with one form in a row, and its derivation (UDer), resp., inflection information (UniMorph):