persuasive
adj.
1580s, from Middle French persuasif, from Medieval Latin persuasivus, from Latin persuas-, past participle stem of persuadere "persuade, convince" (see persuasion). Related: Persuasively; persuasiveness. Replaced earlier persuasible in this sense (see persuadable).
〔李〕[per-;suas;-ivea.] a.有说服力的； 劝导性的 ←suad,suas (L suadere,suasus)=to advise 劝告