The word G. crech “spittle” appeared in the Gnomish Lexicon of the 1910s derived from the early root ᴱ√kerek- or ᴱ√kereχ- (GL/27). In Early Noldorin Word-lists of the 1920s Tolkien had ᴱN. crech “spittle” from primitive ᴱ✶kǝ̀rekka (PE13/140).
Neo-Sindarin: I’d retain ᴺS. crech “spittle” for purposes of Neo-Sindarin.
saccantë ("k")vb. "rent" (past tense of an otherwise unattested verb #saccata- "rend"?) (SD:246)