1. In English, many Adverbs are derived from adjectives by the addition of ly: which is an abbreviation for like, and which, though the addition of it to a noun forms an adjective, is the most distinctive as well as the most common termination of our adverbs: as, candid, candidly; sordid, sordidly; presumptuous, presumptuously. Most adverbs of manner are thus formed.
2. Many adverbs are compounds formed from two or more English words; as, herein, thereby, to-day, always, already, elsewhere, sometimes, wherewithal. The formation and the meaning of these are, in general, sufficiently obvious.
3. About seventy adverbs are formed by means of the prefix, or inseparable preposition, a; as, Abreast, abroach, abroad, across, afar, afield, ago, agog, aland, along, amiss, atilt.
4. Needs, as an adverb, is a contraction of need is; prithee, or pr'ythee, of I pray thee; alone, of all one; only, of one-like; anon, of the Saxon an on; i.e., in one [instant]; never, of ne ever; i.e., not ever. Prof. Gibbs, in Fowler's Grammar, makes needs "the Genitive case of the noun need."—P. 311.
5. Very is from the French veray, or vrai, true; and this, probably, from the Latin verus. Rather appears to be the regular comparative of the ancient rath, soon, quickly, willingly; which comes from the Anglo-Saxon "Rathe, or Hrathe, of one's own accord."—Bosworth. But the parent language had also "Hrathre, to a mind."—Id. That is, to one's mind, or, perhaps, more willingly.
OBSERVATIONS.
OBS. 1.—Many of our most common adverbs are of Anglo-Saxon derivation, being plainly traceable to certain very old forms, of the same import, which the etymologist regards but as the same words differently spelled: as, All, eall, eal, or æll; Almost, ealmæst, or ælmæst; Also, ealswa, or ælswa; Else, elles; Elsewhere, elleshwær; Enough, genog, or genoh; Even, euen, efen, or æfen; Ever, euer, æfer, or æfre; Downward, duneweard; Forward, forweard, or foreweard; Homeward, hamweard; Homewards, hamweardes; How, hu; Little, lytel; Less, læs; Least, læst; No, na; Not, noht, or nocht; Out, ut, or ute; So, swa; Still, stille, or stylle; Then, thenne; There, ther, thar, thær; Thither, thider, or thyder; Thus, thuss, or thus; Together, togædere, or togædre; Too, tó; When, hwenne, or hwænne; Where, hwær; Whither, hwider, hwyder, or hwyther; Yea, ia, gea, or gee; Yes, gese, gise, or gyse.
OBS. 2.—According to Horne Tooke, "Still and Else are the imperatives Stell and Ales of their respective verbs Stellan, to put, and Alesan, to dismiss."—Diversions, Vol. i, p. 111. He afterwards repeats the doctrine thus: "Still is only the imperative Stell or Steall, of Stellan or Steallian, ponere."—Ib., p. 146. "This word Else, formerly written alles, alys, alyse, elles, ellus, ellis, ells, els, and now else; is, as I have said, no other than Ales or Alys, the imperative of Alesan or Alysan, dimittere."—Ib., p. 148. These ulterior and remote etymologies are perhaps too conjectural.
SECTION VIII.—DERIVATION OF CONJUNCTIONS.
The English Conjunctions are mostly of Anglo-Saxon origin. The best etymological vocabularies of our language give us, for the most part, the same words in Anglo-Saxon characters; but Horne Tooke, in his Diversions of Purley, (a learned and curious work which the advanced student may peruse with advantage,) traces, or professes to trace, these and many other English particles, to Saxon verbs or participles. The following derivations, so far as they partake of such speculations, are offered principally on his authority:—