Institutio Oratoria

Quintilian

Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.

For example, the verb iaculari is specially used in the sense of

to throw a javelin,
whereas there is no special verb appropriated to the throwing of a ball or a stake. So, too, while lapidare has the obvious meaning of
to stone,
there is no special word to describe the throwing of clods or potsherds.

Hence abuse or catachresis of words becomes necessary, while metaphor, also, which is the supreme ornament of oratory, applies words to things with which they have strictly no connexion. Consequently propriety turns not on the actual term, but on the meaning of the term, and must be tested by the touchstone of the understanding, not of the ear.

The second sense in which the word propriety is used occurs when there are a number of things all called by the same name: in this case the original term from which the others are derived is styled the proper term.

v7-9 p.201
For example, the word vertex means a whirl of water, or of anything else that is whirled in a like manner: then, owing to the fashion of coiling the hair, it comes to mean the top of the head, while finally, from this sense it derives the meaning of the highest point of a mountain. All these things may correctly be called vertices, but the proper use of the term is the first. So, too, solea and tuidus

are employed as names of fish, to mention no other cases. [*]( Lit. i. e. in the proper sense the sole of the foot and a thrush. ) The third kind of propriety is found in the case where a thing which serves a number of purposes has a special name in some one particular context; for example, the proper term for a funeral song is naenia, and for the general's tent augurale. Again, a term which is common to a number of things may be applied in a proper or special sense to some one of them. Thus we use urbs in the special sense of Rome, venales in the special sense of newly-purchased slaves, and Corinthia in the special sense of bronzes, although there are other cities besides Rome, and many other things which may be styled venales besides slaves, and gold and silver are found at Corinth as well as bronze. But the use of such terms implies no special excellence in an orator.