English edit

Etymology edit

proponent +‎ -cy

Noun edit

proponency (uncountable)

  1. (US) Advocacy.
    • 1935, “letter”, in Department of science, art and literature: Hearings before the Committee on Patents, page 112:
      The chairman of the committee will be very glad to give you the opportunity to express your views, whether of proponency or opponency.

Translations edit