单词 proficacious 释义 † proficacious, a. Obs. rare—1.[? f. L. prfic-re to make progress, profit + -acious. Cf. efficacious.]Advantageous, profitable.a1660Contemp. Hist. Irel. (Ir. Archol. Soc.) I. 204 It would proue somewhat proficacious, if the Counc...