√NŪ/UNU root. “down, under; go down, sink”
This root and ones like it were used for Elvish words for “under” and “(going) down” for much of Tolkien’s life. Probably the first appearance of this root was ᴱ√NUHU “bow, bend down; stoop, sink” from the Qenya Lexicon of the 1910s with variant ᴱ√NŪ appearing in parenthesis, though marked by Tolkien with a “?” (QL/68). The most notable derivative of this root was ᴱQ. núme “west”, and Q. núme(n) remained the Quenya word for “west” for the remainder of Tolkien’s life. Elsewhere in the Qenya Lexicon Tolkien compared the root ᴱ√Ū¹ “under” to the short form of this root ᴱ√NŪ, but went on to note that “Ū- = not” (QL/96), perhaps the inspiration for him later transferring the sense “under” to √NŪ. As for the contemporaneous Gnomish Lexicon, the root ᴱ√NŪ/NUHU had derivatives like G. nûmin “the west” and G. nunthi “downward” (GL/61). Of ᴱ√Ū¹ “under” there is no sign, though there are plenty Gnomish derivatives of ᴱ√Ū² “not” (GL/73).
Indeed, by the Markiya poem of the late 1920s, Tolkien was using ᴱQ. nu for “under” (MC/214), though in the drafts he initially used no (PE16/62, 72). In The Etymologies of the 1930s he had the unglossed invertible root ᴹ√NU/UNU with derivatives like ᴹQ. nu/N. no “under” (Ety/NU). The only notable derivative of its inverted form was ᴹQ. undu “down, under, beneath” (Ety/UNU), which reemerged in the Q. Namárië poem in Q. undulav- “swallow, (lit.) down-licked” (LotR/377; PE17/72; RGEO/58).
In The Etymologies Tolkien also gave a new strengthened form of this root ᴹ√NDŪ “go down, sink, set (of Sun)”, now serving as the basis for words for “west” like ᴹQ. númen, N. dûn or N. annûn, though strictly speaking the latter was the cognate of ᴹQ. andúne “sunset” (Ety/NDŪ), a Quenya word that was also frequently used for “The West”. All these Quenya and Noldorin words reappeared in Tolkien’s later writings, with the caveat that in Sindarin Tolkien used S. nu for “under” as in S. Taur-nu-Fuin “Forest under Nightshade” (S/155). The root √NU, its inversion √UNU and its strengthened form √NDU appeared regularly in Tolkien’s later writing, consistently with senses like “under, (go) down, sink”.
References ✧ Let/303; PE17/64, 152, 169, 188; PE18/88
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ᴹ√NU/UNU root. “*down, under”
References ✧ Ety/NDŪ, NU, UNU; EtyAC/NU
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ᴱ√NUHU root. “bow, bend down; stoop, sink”
References ✧ LT1A/Númë; PME/68; QL/68, 96
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