A word appearing as G. cith “affair, matter, thing” in the Gnomish Lexicon, an elaboration of G. cî “here” (GL/26), clearly based on the early root ᴱ√KI “this by me” (QL/46). Cith was originally glossed “hither”, but this gloss was deleted and elsewhere G. sith has glossed “hither” derived from a newer root ᴱ√SI(N) “this here by me” (GL/68).

Neo-Sindarin: Given the alteration of the root, I would adapt this early word as ᴺS. sith “affair, matter”, as opposed to [N.] nad “thing”. Compare also the later Quenya word tama “that matter” based on a different demonstrative.