A noun appearing as ᴹQ. veru “husband and wife, married pair” in The Etymologies of the 1930s derived from primitive ᴹ✶besū under the root ᴹ√BES “wed” (Ety/BES). It seems to be an intrinsically dual word. It also appeared as an element in the name ᴹQ. Are Veruen “Day of the Spouses”, but under the entry where this word appeared the form was derived from ᴹ✶Bedū, reflecting a variant (and apparently abandoned) root ᴹ√BED (Ety/LEP).
Conceptual Development: The dual form ᴱQ. veringwi “husband and wife” appeared in the Early Qenya Grammar of the 1920s (PE14/77). The same form appeared in the English-Qenya Dictionary of the same period with the gloss “married pair, husband and wife”, where it was apparently related to the adjective ᴱQ. verin “married” (PE15/75).
Neo-Quenya: ᴹQ. veru “married pair” collides with the later word Q. veru “husband”, so for purposes of Neo-Quenya I would adapt the Early Quenya form as ᴺQ. verinu “married pair” to reflect later Quenya dual formations.