52. UNDER, [Gothic, Undar; Dutch, Onder,] beneath, below, is a common Anglo-Saxon word, and very frequent prefix, affirmed by Tooke to be "nothing but on-neder," a Dutch compound = on lower.—See Diversions of Purley, Vol. i, p. 331.
53. UNDERNEATH is a compound of under and neath, low; whence nether, lower.
54. UNTIL is a compound from on or un, and till, or til, the end.
55. UNTO, now somewhat antiquated, is formed, not very analogically, from un and to.
56. UP is from the Anglo-Saxon adjective, "Up or Upp, high, lofty."
57. UPON, which appears literally to mean high on, is from two words up and on.
58. WITH comes to us from the Anglo-Saxon With, a word of like sort and import; which Tooke says is an imperative verb, sometimes from "Withan, to join," and sometimes from "Wyrthan, to be."—See his Diversions, Vol. i, p. 262.
59. WITHIN [, i.e., by-in,] is from with and in: Sax. Withinnan, Binnan, or Binnon.
60. WITHOUT [, i.e., by-out,] is from with and out: Sax. Withútan, -úten, -úton; Bútan, Búton, Bútun.