ᴺS. [G.] ^bethron n. “spouse (m.)” (Category: Husband)
G. bedhron n. “husband” (Category: Husband)
A noun appearing as G. bedhron “husband” in the Gnomish Lexicon of the 1910s replacing archaic G. †benn, a combination of the early root ᴱ√Beđ that was the basis for marriage words and the agental suffix G. -(r)on (GL/22).
Neo-Sindarin: I would adapt this into Neo-Sindarin as ᴺS. bethron “spouse (m.)”, a combination of the later root ᴹ√BES “wed” and the same agental suffix, where sr became thr.
Reference ✧ GL/22 ✧ Bedhron “husband”
|*ᴱ√VEÐE||✧ GL/22 (Beđ)|
|#-(r)on||“agental suffix”||✧ GL/22 (#-ron)|