ᴺS. [G.] ^bethren n. “brother in law, kinsman by marriage” (Category: Brother-in-Law)
|rend²||“male cousin, relative”|
G. bedhren n. “brother in law, kinsman by marriage” (Category: Brother-in-Law)
The word G. bedhren “brother in law, kinsman by marriage” appeared in the Gnomish Lexicon of the 1910s as a combination of the early root ᴱ√Beđ “wed” and G. ren(d) “male relative” (GL/22). It had a variant G. gadren where the initial element was G. gad “joint, link” (GL/36).
Neo-Sindarin: I would adapt this word as ᴺS. bethren for purposes of Neo-Sindarin, updating the initial element to my preferred root for marriage ᴹ√BES “wed” with sr becoming thr in Sindarin.
Reference ✧ GL/22 ✧ “brother in law, any kinsman by marriage”
|*ᴱ√VEÐE||✧ GL/22 (Beđ)|
|ren(d)||“cousin (m.), relative”||✧ GL/22 (#ren)|