lia- vb. "twine" (LT1:271)
Primitive elvish
kanga
root. *tangle; [ᴱ√] weave, twine
Quenya
lanya-
verb. weave
lia-
verb. twine
were-
verb. weave
were- vb. "weave" (cited as a derivative of the root WER "twine, weave" and maybe a primitive form rather than a Quenya word). (PE17:33)
were-
verb. to weave
A verb based on √WER “weave” that Tolkien coined in notes from around 1957 while exploring the development of the name S. Gwaihir (PE17/33). The section where this verb appeared was marked out, and in notes 1959-60 Tolkien changed the root to √WIR “weave” (PE17/191; VT39/10).
Neo-Quenya: This verb might be updated to ✱vir- “to weave” from the later form of the root, but I prefer to stick to attested [ᴹQ.] lanya- for “to weave” (Ety/LAN).
Sindarin
gwir-
verb. to weave
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
Early Primitive Elvish
kanga
root. weave
kaŋa
root. weave, twine
A root appearing in the Qenya Lexicon of the 1910s as ᴱ√KANGA “weave” with various derivatives of similar meaning (QL/45), but the actual root probably had medial Ŋ as with ᴱ√KAŊA “twine” appearing later in that same document (QL/98). There are a number of probably-related forms in the contemporaneous Gnomish Lexicon starting with either cang- or cing-, such as G. cang “tangled”, G. cingra “plaited”, and G. cing(win) “spider” (GL/25-26). There are no signs of this root in Tolkien’s later writing, but I think it is worth positing a Neo-Eldarin root ᴺ√KANGA “tangle” to salvage various Gnomish words having to do with tangles and confusion.
Early Quenya
kanga-
verb. to weave, spin
A verb in the Qenya Lexicon of the 1910s appearing only in its 1st sg. form kangin “I weave, spin” under the early root ᴱ√KANGA (QL/45).
lia
noun. twine
Gnomish
lind
noun. twine
Qenya
lanya-
verb. to weave
A verb in The Etymologies of the 1930s glossed “weave” under the root ᴹ√LAN of the same meaning (Ety/LAN).
Middle Primitive Elvish
lan
root. weave
lanya- (2) vb. "weave" (LAN)