a. [ L. veneficus. ] Veneficial. [ Obs. ] “Venefical instruments.” B. Jonson. [ 1913 Webster ]
a. [ Cf. F. bénéficial, LL. beneficialis. ]
The war which would have been most beneficial to us. Swift. [ 1913 Webster ]
adv. In a beneficial or advantageous manner; profitably; helpfully. [ 1913 Webster ]
n. The quality of being beneficial; profitableness. [ 1913 Webster ]