资料来源 : Webster's Revised Unabridged Dictionary (1913)

Benefic \Be*nef"ic\, a. [L. beneficus. See {Benefice}.]
   Favorable; beneficent. --Milton.

资料来源 : WordNet®

benefic
     adj : exerting a favorable or beneficent influence; "a benefic
           star"; "a benefic force"