ON DERIVATION AND INFLECTION.
§ 371. _Derivation_, like _etymology_, is a word used in a wide and in a
limited sense. In the wide sense of the term, every word, except it be in
the simple form of a root, is a derived word. In this sense the cases,
numbers, and genders of nouns, the persons, moods, and tenses of verbs, the
ordinal numbers, the diminutives, and even the compound words, are alike
matters of derivation. In the wide sense of the term the word _fathers_,
from _father_, is equally in a state of derivation with the word _strength_
from _strong_.
In the use of the word, even in its limited sense, there is considerable
laxity and uncertainty.
_Gender_, _number_, _case_.--These have been called the _accidents_ of the
noun, and these it has been agreed to separate from derivation in its
stricter sense, or from derivation properly so called, and to class
together under the name of declension. Nouns are _declined_.
_Person_, _number_, _tense_, _voice_.--These have been called the
_accidents_ of a verb, and these it has been agreed to separate from
derivation properly so called, and to class together under the name of
conjugation. Verbs are _conjugated_.
Conjugation and declension constitute inflection. Nouns and verbs, speaking
generally, are inflected.
Inflection, a part of derivation in its wider sense, is separated from
derivation properly so called, or from derivation in its limited sense.
The degrees of comparison, or certain derived forms of adjectives; the
ordinals, or certain derived forms of the numerals; the diminutives, &c.,
or certain derived forms of the substantive, have been separated from
derivation properly so called, and considered as parts of inflection. I am
not certain, however, that for so doing there is any better reason than
mere convenience.
Derivation proper, the subject of the present chapter, comprises all the
changes that words undergo, which are not referable to some of the
preceding heads. As such, it is, in its details, a wider field than even
composition. The details, however, are not entered into.
§ 372. Derivation proper may be divided according to a variety of
principles. Amongst others--
I. _According to the evidence._--In the evidence that a word is not simple,
but derived, there are at least two degrees.
a. That the word _strength_ is a derived word I collect to a certainty from
the word _strong_, an independent form, which I can separate from it. Of
the nature of the word _strength_ there is the clearest evidence, or
evidence of the first degree.
b. _Fowl_, _hail_, _nail_, _sail_, _tail_, _soul_; in Anglo-Saxon, _fugel_,
_hægel_, _nægel_, _segel_, _tægel_, _sawel_.--These words are by the best
grammarians considered as derivatives. Now, with these words I cannot do
what was done with the word _strength_, I cannot take from them the part
which I look upon as the derivational addition, and after that leave an
independent word. _Strength_ -th is a true word; _fowl_ or _fugel_ -l is no
true word. If I believe these latter words to be derivations at all, I do
it because I find in words like _harelle_, &c., the -l as a derivational
addition. Yet, as the fact of a word being sometimes used as a derivational
addition does not preclude it from being at other times a part of the root,
the evidence that the words in question are not simple, but derived, is not
cogent. In other words, it is evidence of the second degree.
II. _According to the effect._--The syllable -en in the word _whiten_
changes the noun _white_ into a verb. This is its effect. We may so
classify derivational forms as to arrange combinations like -en (whose
effect is to give the idea of the verb) in one order; whilst combinations
like -th (whose effect is, as in the word _strength_, to give the idea of
abstraction) form another order.
III. _According to the form._--Sometimes the derivational element is a
vowel (as the -ie in _doggie_), sometimes a consonant (as the -th in
_strength_), sometimes a vowel and consonant combined; in other words a
syllable (as the -en, in _whiten_), sometimes a change of vowel without any
addition (as the -i in _tip_, compared with _top_), sometimes a change of
consonant without any addition (as the z in _prize_, compared with
_price_). Sometimes it is a change of accent, like a _súrvey_, compared
with _to survéy_. To classify derivations in this manner, is to classify
them according to their form.
IV. _According to the historical origin of the derivational elements._
V. _According to the number of the derivational elements._--In _fisher_, as
compared with _fish_, there is but one derivational affix. In _fishery_, as
compared with _fish_, the number of derivational elements is two.
§ 373. In words like _bishopric_, and many others mentioned in the last
Chapter, we had compound words under the appearance of derived ones; in
words like _upmost_, and many others, we have derivation under the
appearance of composition.
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