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. I have not rejected any by design, merely because they were unnecessary or exuberant; but have received those which by different writers have been differently formed, as viscid, and viscidity, viscous, and viscosity. Compounded or double words I have seldom noted, except when they obtain a signification different from that which the components have in their simple state. Thus highwayman, woodman, and horsecourser, require an explanation; but of thieflike or coachdriver no notice was needed, because the primitives contain the meaning of the compounds.