Nap, to take a nap.  Dormire, condormiscere.  Cym. heppian.  A. S. hnaeppan.  Quod postremum videri potest desumptum ex [word in Greek], obscuritas, tenebrae:  nihil enim aeque solet conciliare somnum, quam caliginosa profundae noctis obscuritas.

Stammerer, Balbus, blaesus.  Goth.  STAMMS. A. S. stamer, stamur.  D. stam.  B. stameler.  Su. stamma.  Isl. stamr.  Sunt a [word in Greek] vel [word in Greek] nimia loquacitate alios offendere; quod impedite loquentes libentissime garrire soleant; vel quod aliis nimii semper videantur, etiam parcissime loquentes.]

Our knowledge of the northern literature is so scanty, that of words undoubtedly Teutonick the original is not always to be found in any ancient language; and I have therefore inserted Dutch or German substitutes, which I consider not as radical but parallel, not as the parents, but sisters of the English.

The words which are represented as thus related by descent or cognation, do not always agree in sense; for it is incident to words, as to their authours, to degenerate from their ancestors, and to change their manners when they change their country.  It is sufficient, in etymological enquiries, if the senses of kindred words be found such as may easily pass into each other, or such as may both be referred to one general idea.

The etymology, so far as it is yet known, was easily found in the volumes where it is particularly and professedly delivered; and, by proper attention to the rules of derivation, the orthography was soon adjusted.  But to collect the words of our language was a task of greater difficulty:  the deficiency of dictionaries was immediately apparent; and when they were exhausted, what was yet wanting must be sought by fortuitous and unguided excursions into books, and gleaned as industry should find, or chance should offer it, in the boundless chaos of a living speech.  My search, however, has been either skilful or lucky; for I have much augmented the vocabulary.

As my design was a dictionary, common or appellative, I have omitted all words which have relation to proper names; such as Arian, Socinian, Calvinist, Benedictine, Mahometan; but have retained those of a more general nature, as Heathen, Pagan.

Of the terms of art I have received such as could be found either in books of science or technical dictionaries; and have often inserted, from philosophical writers, words which are supported perhaps only by a single authority, and which being not admitted into general use, stand yet as candidates or probationers, and must depend for their adoption on the suffrage of futurity.

The words which our authours have introduced by their knowledge of foreign languages, or ignorance of their own, by vanity or wantonness, by compliance with fashion or lust of innovation, I have registred as they occurred, though commonly only to censure them, and warn others against the folly of naturalizing useless foreigners to the injury of the natives.