sundo (þ) noun "base, root, root-word" (SUD), sc. a Quendian consonantal "base". According to VT46:16, Tolkien changed the root to STUD, thereby implying that sundo was earlier þundo (compare Sindarin thond "root"). PE18:95 gives the pl. form as sundur, seemingly implying a stem-form sundu-. It is not, however, used in the compound sundocarmë "base-structure" (PE18:84 not **sunducarmë), a term used in the description of the structure of the various Quendian "bases" or roots.
Quenya
sundo
noun. base, root, root-word, base, root, [ᴹQ.] root-word
sundo
base, root, root-word
sundo
noun. base
base
sundóma
base-vowel
sundóma (þ) noun *"base-vowel" (sundo + óma), the determinant vowel of a "base" or root (Christopher Tolkien gives the example KAT, which stem has the sundóma A; the stem TALAT has the sundóma repeated; in derivative forms the sundóma might be placed before the first consonant; e.g. ATALAT) (WJ:319)
Carmë
art
Carmë("k")noun "art" (UT:459); used = "structure" in sundocarmë ("k") "Base-structure", q.v. under sundo.
talma
base, foundation, root
talma noun "base, foundation, root" (TALAM), also translated "bottom" in the expression "top to bottom", see below.% Talmar Ambaren (place-name, *"Foundations of the World" - this is pre-classical "Qenya" with genitive in -en instead of -o as in LotR-style Quenya) (TALAM). Allative talmanna in the phrase telmello talmanna** "from hood to base**, top to bottom" _(VT46:18; notice misreading "telmanna" in the Etymologies as printed in LR, entry TEL-, TELU-)_
A word translated as “base” (PE18/33, 60, 84; WJ/319) or in its plural form as “roots” (PE18/95). In The Etymologies of the 1930s Tolkien had ᴹQ. sundo “base, root, root-word” under the root ᴹ√SUD “base, ground” (Ety/SUD). The word Sundokarme “base structure” indicates a stem of sundo- (PE18/33, 84). In one place Tolkien gave its plural as sundur indicating a stem form of sundu- (PE18/95), but in another Tolkien had sundar “roots” indicating an alternate singular form sunda (UT/166). See S. thond “root” for a discussion of the vacillations on the possible etymologies of this word.
Conceptual Development: The Etymologies of the 1930s also had ᴹQ. numbe or núve “root, foundation” under the root {ᴹ√(N)DUM >>} ᴹ√(N)DUB “lay base, foundation, root; found”, but this entry was deleted (EtyAC/NDUB).