casta (2) noun "cause" (reason) (QL:43)
Quenya
tyarwë
noun. reason
cahta
noun. cause, motive, reason
casta
cause
tyar-
cause
tyar- vb. "cause" (KYAR)
tyar-
verb. cause
Sindarin
caeth
noun. cause, reason, motive
caethad
noun. reason, cause
Primitive elvish
kah
root. cause
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!
Gnomish
caith
noun. cause, reason, motive
Early Primitive Elvish
kaha
root. cause
A root in the Qenya Lexicon of the 1910s glossed “cause” with derivatives like ᴱQ. ka- “cause”, ᴱQ. káma “guilt, responsibility”, and ᴱQ. kasta “cause, motive, ultimate reason” (QL/43). There are similar derivatives in the contemporaneous Gnomish Lexicon, such as G. caith “cause, reason, motive” < ᴱ✶kahta (GL/24). Some of these words have no good replacements in Tolkien’s later writing, so I think it is worthwhile to postulate a Neo-Eldarin root ᴺ√KAH to salvage some of these early words.
Early Quenya
ka-
prefix. cause
@@@ kasta used in NQNT