MORPHOLOGICAL STRUCTURE OF ENGLISH WORDS. MORPHEMES . FREE AND BOUND FORMS
If we describe a w?rd as an autonomous unit of language in which a particular meaning is associated with a particular sound complex and which is capable of a particular grammatical employment and able to form a sentence by itself (see p. 9), we have the possibility to distinguish it from the other fundamental language unit, namely, the morpheme.
A morpheme is also an association of a given meaning with a given sound pattern. But unlike a word it is not autonomous. Morphemes occur in speech only as constituent parts of words, not independently, although a word may consist of a single morpheme. Nor are they divisible into smaller meaningful units. That is why the morpheme may be defined as the minimum meaningful language unit.
The term morpheme is derived from Gr morphe ?form? + -eme. The Greek suffix -erne has been adopted by linguists to denote the smallest significant or distinctive unit. (Cf. phoneme, sememe.) The morpheme is the smallest meaningful unit of form. A form in these cases is a recurring discrete unit of speech.
A form is said to be free if it may stand alone without changing its meaning; if not, it is a bound form, so called because it is always bound to something else. For example, if we compare the words sportive and elegant and their parts, we see that sport, sportive, elegant may occur alone as utterances, whereas eleg-, -ive, -ant are bound forms because they never occur alone. A word is, by L. Bloomfield?s definition, a minimum free form. A morpheme is said to be either bound or free. This statement should b? taken with caution. It means that some morphemes are capable of forming words without adding other morphemes: that is, they are homonymous to free forms.
According to the role they play in constructing words, morphemes are subdivided into roots and affixes. The latter are further subdivided, according to their position, into prefixes, suffixes and infixes, and according to their function and meaning, into derivational and functional .affixes, the latter also called endings or outer formatives.
When a derivational or functional affix is stripped from the word, what remains is a stem (or astern base). The stem expresses the lexical and the part of speech meaning. For the word hearty and for the paradigm heart (sing.) ?hearts (pi.)1 the stem may be represented as heart-. This stem is a single morpheme, it contains nothing but the root, so it is a simple stem. It is also a free stem because it is homonymous to the word heart.
A stem may also be defined as the part of the word that remains unchanged throughout its paradigm. The stem of the paradigm hearty ? heartier ? (the) heartiest is hearty-. It is a free stem, but as it consists of a root morpheme and an affix, it is not simple but derived. Thus, a stem containing one or more affixes is a derived stem. If after deducing the affix the remaining stem is not homonymous to a separate word of the same root, we call it abound stem. Thus, in the word cordial ?proceeding as if from the heart?, the adjective-forming suffix can be separated on the analogy with such words as bronchial, radial, social. The remaining stem, however, cannot form a separate word by itself, it is bound. In cordially and cordiality, on the other hand, the derived stems are free.
Bound stems are especially characteristic of loan words. The point may be illustrated by the following French borrowings: arrogance, charity, courage, coward, distort, involve, notion, legible and tolerable, to give but a few.2 After the affixes of these words are taken away the remaining elements are: arrog-, char-, cour-, cow-, -tort, -volve, not-, leg-, toler-, which do not coincide with any semantically related independent words.
Roots are main morphemic vehicles of a given idea in a given language at a given stage of its development. A root may be also regarded as the ultimate constituent element which remains after the removal of all functional and derivational affixes and does not admit any further analysis. It is the common element of words within a word-family. Thus, -heart- is the common root of the following series of words: heart, hearten, dishearten, heartily, heartless, hearty, heartiness, sweetheart, heart-broken, kind-hearted, whole-heartedly, etc. In some of these, as, for example, in hearten, there is only one root; in others the root -heart is combined with some other root, thus forming a compound like sweetheart.
The root word heart is unsegmentable, it is non-motivated morphologically. The morphemic structure of all the other words in this word-family is obvious ? they are segmentable as consisting of at least two distinct morphemes. They may be further subdivided into: 1) those formed by affixation or affixational derivatives consisting of a root morpheme and one or more affixes: hearten, dishearten, heartily, heartless, hearty, heartiness; 2) compounds, in which two, or very rarely more, stems simple or derived are combined into a lexical unit: sweetheart, heart-shaped, heart-broken or3) derivational compounds where words of a phrase are joined together by composition and affixation: kind-hearted. This last process is also called phrasal derivation ((kind heart) + -ed)).
There exist word-families with several tmsegmentable members, the derived elements being formed by conversion or clipping. The word-family with the noun father as its centre contains alongside affixational derivatives fatherhood, fatherless, fatherly a verb father ?to adopt? or ?to originate? formed by conversion.