The Noldorin adjectival formation meaning “of the Spouses” appearing in the name Ar Vedhwen “Day of the Spouses”, appearing only in its lenited form Vedhwen (Ety/LEP). It developed from ancient Bedū+ina; see that entry for further discussion.
Quenya
vesta
matrimony
vesta noun "matrimony" (BES, VT49:46)