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
kiti
root.*tickle
An unglossed root in the Qenya Lexicon of the 1910s whose derivatives had to do with tickling such ᴱQ. kitya- “tickle” and ᴱQ. kityalea “ticklish, susceptible, sensitive” (QL/47). The contemporaneous Gnomish Lexicon contained a couple of possible Gnomish cognates: G. tisc “ticklish” and G. tisca- “tickle” (GL/70). This kind of k/t variation is seen in a few other early Qenya and Gnomish forms, such as ᴱQ. talqe “glass” vs. G. celc (QL/88; GL/25) and probably represents variant roots in ancient Elvish.
I think it is worth preserving this root for purposes of Neo-Eldarin, but the only way I see to preserve a similar k/t variation in the phonetic systems of later Quenya and Sindarin is to posit a root inversion to √TIK in the Sindarin branch, as in the inversion of the CE root √LED’s to √DEL in Quenya (WJ/363).
An unglossed root in the Qenya Lexicon of the 1910s whose derivatives had to do with tickling such ᴱQ. kitya- “tickle” and ᴱQ. kityalea “ticklish, susceptible, sensitive” (QL/47). The contemporaneous Gnomish Lexicon contained a couple of possible Gnomish cognates: G. tisc “ticklish” and G. tisca- “tickle” (GL/70). This kind of k/t variation is seen in a few other early Qenya and Gnomish forms, such as ᴱQ. talqe “glass” vs. G. celc (QL/88; GL/25) and probably represents variant roots in ancient Elvish.
I think it is worth preserving this root for purposes of Neo-Eldarin, but the only way I see to preserve a similar k/t variation in the phonetic systems of later Quenya and Sindarin is to posit a root inversion to √TIK in the Sindarin branch, as in the inversion of the CE root √LED’s to √DEL in Quenya (WJ/363).